/* Page-specific body overrides */
        body {
            overflow-x: hidden;
        }

        .cart-btn svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        /* ========== PAGE LAYOUT ========== */
        .page-wrapper {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .content-wrapper {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding: 40px 20px;
        }

        .container {
            max-width: 1400px;
            width: 100%;
            position: relative;
            z-index: 1;
        }

        .header {
            text-align: center;
            margin-bottom: 40px;
        }

        h1 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .subtitle {
            font-size: 17px;
            color: var(--text-secondary);
        }

        /* ========== CALCULATOR SECTION ========== */
        .calculator-section {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-bottom: 30px;
        }

        .calculator-section h2 {
            color: var(--text-primary);
            font-size: 24px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 30px;
        }

        .calc-row {
            margin-bottom: 28px;
        }

        .calc-label {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-secondary);
            text-align: center;
        }

        .input-group {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* ========== FORM INPUTS ========== */
        .calc-input {
            padding: 12px 16px;
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 16px;
            font-family: inherit;
            width: 180px;
            transition: border-color 0.2s ease;
        }

        .calc-input:focus {
            outline: none;
            border-color: var(--primary);
        }

        .calc-input::placeholder {
            color: var(--text-muted);
        }

        .unit-select {
            padding: 10px 14px;
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 14px;
            font-family: inherit;
            cursor: pointer;
            width: auto;
            min-width: 70px;
            transition: border-color 0.2s ease;
        }

        .unit-select:focus {
            outline: none;
            border-color: var(--primary);
        }

        /* ========== PRESET BUTTONS ========== */
        .preset-buttons {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: 12px;
        }

        .preset-btn {
            padding: 8px 18px;
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 14px;
            font-family: inherit;
            font-weight: 500;
            color: var(--text-secondary);
        }

        .preset-btn:hover {
            background: var(--bg-elevated);
            border-color: var(--border-hover);
            color: var(--text-primary);
        }

        .preset-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #ffffff;
        }

        /* Compound Type Buttons */
        .preset-btn.compound-type {
            font-weight: 600;
        }

        /* Syringe Type Buttons */
        .preset-btn.syringe-type.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #ffffff;
        }

        /* Nasal Mode Buttons */
        .preset-btn.nasal-mode {
            border-color: rgba(168, 85, 247, 0.3);
            color: #a855f7;
        }

        .preset-btn.nasal-mode:hover {
            background: rgba(168, 85, 247, 0.1);
            border-color: rgba(168, 85, 247, 0.5);
        }

        .preset-btn.nasal-mode.active {
            background: #a855f7;
            border-color: #a855f7;
            color: #ffffff;
        }

        /* Blend Count Buttons */
        .preset-btn.blend-count {
            border-color: rgba(96, 165, 250, 0.3);
            color: #60a5fa;
        }

        .preset-btn.blend-count:hover {
            background: rgba(96, 165, 250, 0.1);
            border-color: rgba(96, 165, 250, 0.5);
        }

        .preset-btn.blend-count.active {
            background: #60a5fa;
            border-color: #60a5fa;
            color: #ffffff;
        }

        /* Testosterone Ester Buttons */
        .preset-btn.testo-ester {
            border-color: rgba(16, 185, 129, 0.3);
            color: #10b981;
        }

        .preset-btn.testo-ester:hover {
            background: rgba(16, 185, 129, 0.1);
            border-color: rgba(16, 185, 129, 0.5);
        }

        .preset-btn.testo-ester.active {
            background: #10b981;
            border-color: #10b981;
            color: #ffffff;
        }

        /* Testosterone Schedule Buttons */
        .preset-btn.testo-schedule {
            border-color: rgba(16, 185, 129, 0.3);
            color: #10b981;
        }

        .preset-btn.testo-schedule:hover {
            background: rgba(16, 185, 129, 0.1);
            border-color: rgba(16, 185, 129, 0.5);
        }

        .preset-btn.testo-schedule.active {
            background: #10b981;
            border-color: #10b981;
            color: #ffffff;
        }

        /* Testosterone Day Buttons */
        .preset-btn.testo-day-btn {
            border-color: rgba(16, 185, 129, 0.3);
            color: #10b981;
        }

        .preset-btn.testo-day-btn:hover {
            background: rgba(16, 185, 129, 0.1);
            border-color: rgba(16, 185, 129, 0.5);
        }

        .preset-btn.testo-day-btn.active {
            background: #10b981;
            border-color: #10b981;
            color: #ffffff;
        }

        /* Testosterone Week Buttons */
        .testo-week-btn {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 13px;
            font-weight: 600;
            font-family: inherit;
            transition: all 0.2s ease;
        }

        .testo-week-btn:hover {
            background: rgba(16, 185, 129, 0.1);
            border-color: rgba(16, 185, 129, 0.5);
            color: #10b981;
        }

        .testo-week-btn.active {
            background: rgba(16, 185, 129, 0.3);
            border: 1px solid #10b981;
            color: #ffffff;
        }

        /* ========== COMPOUND OPTIONS ========== */
        .compound-options {
            display: none;
        }

        .compound-options.active {
            display: block;
        }

        /* ========== RESULTS ========== */
        .results-box {
            background: var(--bg-surface);
            border: 1px solid var(--primary);
            border-radius: var(--radius-md);
            padding: 28px;
            margin-top: 30px;
        }

        .result-item {
            margin-bottom: 18px;
            font-size: 18px;
            text-align: center;
        }

        .result-label {
            color: var(--text-secondary);
            margin-bottom: 6px;
            font-size: 14px;
        }

        .result-value {
            color: var(--primary-light);
            font-weight: 700;
            font-size: 26px;
        }

        /* ========== SYRINGE VISUAL ========== */
        .syringe-visual {
            margin-top: 30px;
            padding: 30px;
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            text-align: center;
        }

        .syringe-info {
            background: rgba(96, 165, 250, 0.08);
            border: 1px solid rgba(96, 165, 250, 0.25);
            border-radius: var(--radius-sm);
            padding: 12px;
            margin-bottom: 20px;
            text-align: center;
            font-size: 14px;
            color: #60a5fa;
        }

        .syringe-container {
            position: relative;
            width: 100%;
            max-width: 800px;
            margin: 20px auto;
        }

        .syringe-svg {
            width: 100%;
            height: auto;
        }

        /* ========== DISCLAIMER ========== */
        .disclaimer-box {
            background: rgba(192, 57, 43, 0.08);
            border: 1px solid var(--primary);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-top: 30px;
            width: 100%;
            clear: both;
            display: block;
        }

        .disclaimer-box h3 {
            color: var(--primary-light);
            margin-bottom: 12px;
            font-size: 18px;
            text-align: center;
        }

        .disclaimer-box p {
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 8px;
            text-align: center;
            font-size: 14px;
        }

        /* ========== ACTION BUTTONS ========== */
        .action-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .action-btn {
            padding: 10px 22px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--bg-surface);
            color: var(--text-primary);
            font-size: 14px;
            font-weight: 600;
            font-family: inherit;
            cursor: pointer;
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .action-btn:hover {
            background: var(--bg-elevated);
            border-color: var(--border-hover);
        }

        .action-btn:active {
            transform: translateY(0);
        }

        .action-btn.success {
            border-color: rgba(39, 174, 96, 0.4);
            color: var(--success);
        }

        .action-btn.success:hover {
            background: rgba(39, 174, 96, 0.1);
            border-color: var(--success);
        }

        /* ========== SAVE/LOAD SECTION ========== */
        .save-load-section {
            background: rgba(39, 174, 96, 0.06);
            border: 1px solid rgba(39, 174, 96, 0.25);
            border-radius: var(--radius-md);
            padding: 20px;
            margin-bottom: 24px;
            width: 100%;
            clear: both;
            display: block;
        }

        .save-load-section h3 {
            color: var(--success);
            margin: 0 0 14px 0;
            font-size: 16px;
            text-align: center;
        }

        .save-load-controls {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }

        .save-input {
            padding: 10px 14px;
            background: var(--bg-surface);
            border: 1px solid rgba(39, 174, 96, 0.25);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 14px;
            font-family: inherit;
            width: 250px;
            transition: border-color 0.2s ease;
        }

        .save-input:focus {
            outline: none;
            border-color: var(--success);
        }

        .save-input::placeholder {
            color: var(--text-muted);
        }

        .saved-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 14px;
            max-height: 300px;
            overflow-y: auto;
        }

        .saved-calc-btn {
            padding: 8px 14px;
            background: var(--bg-surface);
            border: 1px solid rgba(39, 174, 96, 0.3);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            justify-content: space-between;
            min-width: 200px;
            font-family: inherit;
            font-size: 14px;
        }

        .saved-calc-btn:hover {
            background: rgba(39, 174, 96, 0.1);
            border-color: var(--success);
        }

        .delete-saved {
            color: var(--primary-light);
            font-weight: bold;
            padding: 2px 8px;
            border-radius: 4px;
            transition: all 0.2s ease;
        }

        .delete-saved:hover {
            background: rgba(192, 57, 43, 0.15);
        }

        .no-saved {
            color: var(--text-muted);
            text-align: center;
            padding: 20px;
            font-style: italic;
        }

        /* ========== HISTORY SECTION ========== */
        .history-section {
            background: rgba(96, 165, 250, 0.06);
            border: 1px solid rgba(96, 165, 250, 0.25);
            border-radius: var(--radius-md);
            padding: 20px;
            margin-bottom: 24px;
            width: 100%;
            clear: both;
            display: block;
        }

        .history-section h3 {
            color: #60a5fa;
            margin: 0 0 14px 0;
            font-size: 16px;
            text-align: center;
            cursor: pointer;
            user-select: none;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .history-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            max-height: 200px;
            overflow-y: auto;
        }

        .history-item {
            background: var(--bg-surface);
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(96, 165, 250, 0.2);
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 13px;
        }

        .history-item:hover {
            background: var(--bg-elevated);
            border-color: #60a5fa;
        }

        .history-time {
            color: var(--text-muted);
            font-size: 12px;
        }

        .history-details {
            color: var(--text-primary);
            margin-top: 4px;
        }

        .history-result {
            color: #60a5fa;
            font-weight: 600;
            margin-top: 4px;
        }

        .history-collapsed {
            display: none;
        }

        /* ========== TOOLTIPS ========== */
        .tooltip-icon {
            display: inline-block;
            width: 18px;
            height: 18px;
            background: rgba(96, 165, 250, 0.15);
            border-radius: 50%;
            text-align: center;
            line-height: 18px;
            font-size: 12px;
            color: #60a5fa;
            cursor: help;
            margin-left: 8px;
            position: relative;
        }

        .tooltip-icon:hover {
            background: rgba(96, 165, 250, 0.3);
        }

        .tooltip-text {
            visibility: hidden;
            width: 250px;
            background: var(--bg-card);
            color: var(--text-primary);
            text-align: left;
            border-radius: var(--radius-sm);
            padding: 12px;
            position: absolute;
            z-index: 1000;
            bottom: 125%;
            left: 50%;
            margin-left: -125px;
            opacity: 0;
            transition: opacity 0.3s;
            border: 1px solid #60a5fa;
            font-size: 13px;
            line-height: 1.5;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
        }

        .tooltip-icon:hover .tooltip-text {
            visibility: visible;
            opacity: 1;
        }

        .tooltip-text::after {
            content: "";
            position: absolute;
            top: 100%;
            left: 50%;
            margin-left: -5px;
            border-width: 5px;
            border-style: solid;
            border-color: #60a5fa transparent transparent transparent;
        }

        /* ========== SLIDER ========== */
        .slider-container {
            margin: 24px 0;
            padding: 20px;
            background: rgba(96, 165, 250, 0.06);
            border: 1px solid rgba(96, 165, 250, 0.25);
            border-radius: var(--radius-md);
        }

        .slider-label {
            color: #60a5fa;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 12px;
            text-align: center;
        }

        .slider-value-display {
            color: #60a5fa;
            font-size: 28px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 16px;
        }

        .volume-slider {
            -webkit-appearance: none;
            width: 100%;
            height: 8px;
            border-radius: 4px;
            background: var(--bg-elevated);
            outline: none;
            transition: opacity 0.2s;
        }

        .volume-slider:hover {
            opacity: 1;
        }

        .volume-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #60a5fa;
            cursor: pointer;
            border: 3px solid #ffffff;
            box-shadow: 0 2px 8px rgba(96, 165, 250, 0.4);
        }

        .volume-slider::-moz-range-thumb {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #60a5fa;
            cursor: pointer;
            border: 3px solid #ffffff;
            box-shadow: 0 2px 8px rgba(96, 165, 250, 0.4);
        }

        .slider-marks {
            display: flex;
            justify-content: space-between;
            margin-top: 8px;
            padding: 0 10px;
        }

        .slider-mark {
            color: var(--text-muted);
            font-size: 12px;
        }

        /* ========== BLEND DOSE CARDS ========== */
        .blend-dose-card {
            background: rgba(96, 165, 250, 0.06);
            padding: 18px;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid rgba(96, 165, 250, 0.2);
            transition: all 0.2s ease;
        }

        .blend-dose-card:hover {
            border-color: #60a5fa;
        }

        .blend-peptide-name {
            color: #60a5fa;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 8px;
        }

        .blend-dose-value {
            color: var(--text-primary);
            font-size: 24px;
            font-weight: 700;
        }

        .blend-concentration {
            color: var(--text-muted);
            font-size: 13px;
            margin-top: 4px;
        }

        /* ========== INPUT VALIDATION ========== */
        .calc-input.invalid {
            border-color: var(--primary-light) !important;
            background: rgba(231, 76, 60, 0.08);
            animation: shake 0.5s ease;
        }

        .calc-input.valid {
            border-color: var(--success) !important;
        }

        /* ========== CONTACT MODAL ========== */
        .contact-modal {
            display: none;
            position: fixed;
            z-index: 10000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.85);
            backdrop-filter: blur(8px);
            animation: fadeIn 0.3s ease;
        }

        .contact-modal.show {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .contact-modal-content {
            background: var(--bg-card);
            padding: 36px;
            border-radius: var(--radius-lg);
            max-width: 500px;
            width: 90%;
            position: relative;
            border: 1px solid var(--border);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            animation: slideUp 0.4s ease;
        }

        .contact-close {
            position: absolute;
            right: 20px;
            top: 15px;
            font-size: 30px;
            font-weight: bold;
            color: var(--text-secondary);
            cursor: pointer;
            transition: color 0.2s ease;
        }

        .contact-close:hover {
            color: var(--text-primary);
        }

        .contact-form-group {
            margin-bottom: 18px;
        }

        .contact-form-group label {
            display: block;
            margin-bottom: 6px;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 14px;
        }

        .contact-form-group input,
        .contact-form-group textarea,
        .contact-form-group select {
            width: 100%;
            padding: 12px;
            background-color: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 15px;
            font-family: inherit;
            transition: border-color 0.2s ease;
        }

        .contact-form-group input:focus,
        .contact-form-group textarea:focus,
        .contact-form-group select:focus {
            outline: none;
            border-color: var(--primary);
        }

        .contact-form-group textarea {
            resize: vertical;
            min-height: 120px;
        }

        .contact-submit-btn {
            width: 100%;
            background: var(--primary);
            color: white;
            border: none;
            padding: 14px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            font-family: inherit;
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .contact-submit-btn:hover {
            background: var(--primary-dark);
        }

        /* ========== TOAST NOTIFICATION ========== */
        .toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--success);
            color: white;
            padding: 14px 22px;
            border-radius: var(--radius-md);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
            z-index: 10001;
            display: none;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 14px;
            animation: slideInRight 0.3s ease;
        }

        .toast.show {
            display: flex;
        }

        .toast.error {
            background: var(--primary);
        }


        /* ========== THEME TOGGLE ========== */
        .theme-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: var(--bg-surface);
            padding: 8px 14px;
            border-radius: 25px;
            border: 1px solid var(--border);
            transition: all 0.2s ease;
            margin: 0 auto 24px auto;
            width: fit-content;
        }

        .theme-toggle-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .switch {
            position: relative;
            display: inline-block;
            width: 50px;
            height: 24px;
        }

        .switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--bg-elevated);
            transition: 0.4s;
            border-radius: 24px;
        }

        .toggle-slider:before {
            position: absolute;
            content: "";
            height: 18px;
            width: 18px;
            left: 3px;
            bottom: 3px;
            background-color: white;
            transition: 0.4s;
            border-radius: 50%;
        }

        input:checked + .toggle-slider {
            background-color: var(--primary);
        }

        input:checked + .toggle-slider:before {
            transform: translateX(26px);
        }

        .theme-icon {
            font-size: 18px;
        }

        /* ========== LIGHT MODE ========== */
        body.light-mode {
            --bg-dark: #f5f5f7;
            --bg-card: #ffffff;
            --bg-surface: #f0f0f2;
            --bg-elevated: #e8e8ea;
            --text-primary: #1a1b1e;
            --text-secondary: #555860;
            --text-muted: #8a8d93;
            --border: #dcdee3;
            --border-hover: #c5c7cc;
        }

        body.light-mode .announcement-bar {
            background: var(--primary);
        }

        body.light-mode .preset-btn {
            color: var(--text-secondary);
        }

        body.light-mode .preset-btn.active {
            color: #ffffff;
        }

        body.light-mode .preset-btn.nasal-mode {
            color: #a855f7;
        }

        body.light-mode .preset-btn.nasal-mode.active {
            color: #ffffff;
        }

        body.light-mode .preset-btn.blend-count {
            color: #3b82f6;
        }

        body.light-mode .preset-btn.blend-count.active {
            color: #ffffff;
        }

        body.light-mode .preset-btn.testo-ester,
        body.light-mode .preset-btn.testo-schedule,
        body.light-mode .preset-btn.testo-day-btn {
            color: #059669;
        }

        body.light-mode .preset-btn.testo-ester.active,
        body.light-mode .preset-btn.testo-schedule.active,
        body.light-mode .preset-btn.testo-day-btn.active {
            color: #ffffff;
        }

        body.light-mode .result-value {
            color: var(--primary);
        }

        body.light-mode .calc-input,
        body.light-mode .unit-select,
        body.light-mode select {
            background: var(--bg-surface);
            color: var(--text-primary);
            border-color: var(--border);
        }

        body.light-mode h1,
        body.light-mode h2 {
            color: var(--text-primary);
        }

        body.light-mode .calculator-section h2 {
            color: var(--text-primary);
        }

        body.light-mode .disclaimer-box h3 {
            color: var(--primary);
        }

        body.light-mode .theme-toggle {
            background: var(--bg-card);
            border-color: var(--border);
        }

        /* ========== FEATURE REQUEST SECTION ========== */
        .feature-request-section {
            background: rgba(39, 174, 96, 0.06);
            border: 1px solid rgba(39, 174, 96, 0.25);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-top: 24px;
            text-align: center;
        }

        .feature-request-section h3 {
            color: var(--success);
            margin-bottom: 8px;
            font-size: 18px;
        }

        .feature-request-section p {
            color: var(--text-secondary);
            margin-bottom: 14px;
            font-size: 14px;
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes slideUp {
            from {
                transform: translateY(50px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        @keyframes slideInRight {
            from {
                transform: translateX(400px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-10px); }
            75% { transform: translateX(10px); }
        }


        /* ========== RESPONSIVE ========== */
        @media (max-width: 768px) {
            .page-wrapper {
                padding: 0;
            }

            .content-wrapper {
                padding: 24px 0;
            }

            .container {
                padding: 0;
                margin: 0;
                max-width: 100%;
            }

            .calculator-section {
                padding: 16px 10px;
                border-radius: 0;
                margin: 0;
                border-left: none;
                border-right: none;
            }

            .header {
                padding: 16px 12px;
            }

            .calc-row {
                padding: 0 5px;
            }

            .calc-input {
                width: 100%;
                font-size: 16px;
                padding: 10px;
            }

            h1 {
                font-size: 24px;
            }

            .subtitle {
                font-size: 13px;
            }

            .calc-label {
                font-size: 13px;
            }

            .preset-btn {
                font-size: 12px;
                padding: 6px 12px;
            }

            .result-label {
                font-size: 13px;
            }

            .result-value {
                font-size: 20px;
            }

            .action-btn {
                font-size: 13px;
                padding: 10px 16px;
            }

            .tooltip-text {
                font-size: 11px;
                width: 200px;
                margin-left: -100px;
            }

            .theme-toggle {
                padding: 6px 12px;
                margin-bottom: 16px;
            }

            .theme-toggle-label {
                font-size: 12px;
            }

            .results-box {
                padding: 20px 12px;
                border-radius: var(--radius-sm);
            }

            .syringe-visual {
                padding: 16px;
            }

            .disclaimer-box {
                padding: 16px 10px;
            }

            .save-load-section,
            .history-section {
                padding: 14px 10px;
            }

            .save-input {
                width: 100%;
            }

            .blend-dose-card {
                padding: 14px;
            }

            .blend-peptide-name {
                font-size: 14px;
            }

            .blend-dose-value {
                font-size: 20px;
            }

            .slider-value-display {
                font-size: 24px;
            }
        }

        @media (max-width: 480px) {
            .toast {
                bottom: 20px;
                right: 20px;
                left: 20px;
                font-size: 13px;
            }

            /* Testosterone calculator mobile styles */
            #testo-chart-container {
                margin-left: -10px !important;
                margin-right: -10px !important;
                width: calc(100% + 20px) !important;
                border-radius: 0 !important;
                padding-left: 5px !important;
                padding-right: 5px !important;
            }

            #testo-results {
                padding: 15px 5px !important;
            }

            /* Stack grid layouts on mobile */
            .testo-info-grid {
                grid-template-columns: 1fr !important;
            }

            #testo-level-stats {
                grid-template-columns: 1fr !important;
                gap: 8px !important;
            }

            /* Week selector buttons on mobile */
            .testo-week-btn {
                padding: 5px 8px;
                font-size: 11px;
            }

            .contact-modal-content {
                padding: 24px 16px;
            }

            .preset-btn {
                font-size: 11px;
                padding: 5px 10px;
            }
        }