/* ===== common.css — общие стили страницы ===== */

:root {
        /* ===== Gmail Material 3 — Light Theme ===== */
        --md-primary: #0B57D0;
        --md-on-primary: #FFFFFF;
        --md-primary-container: #D3E3FD;
        --md-on-primary-container: #041E49;

        --md-secondary: #5E5E5E;
        --md-on-secondary: #FFFFFF;
        --md-secondary-container: #E8E8E8;
        --md-on-secondary-container: #1F1F1F;

        --md-tertiary: #00639B;
        --md-tertiary-container: #C7E7FF;

        --md-error: #C5221F;
        --md-error-container: #FADAD6;
        --md-on-error-container: #601410;

        --md-background: #FFFFFF;
        --md-on-background: #1F1F1F;
        --md-surface: #FFFFFF;
        --md-on-surface: #1F1F1F;
        --md-surface-variant: #F0F4F9;
        --md-on-surface-variant: #444746;
        --md-outline: #8E918F;
        --md-outline-variant: #C4C7C5;

        /* Gmail accent colours */
        --green: #0F7823;
        --green-container: #E6F4EA;
        --yellow: #E37400;
        --yellow-container: #FEF7E0;
        --purple: #7B1FA2;
        --purple-container: #F3E8FF;

        --primary: var(--md-primary);
        --on-primary: var(--md-on-primary);
        --primary-container: var(--md-primary-container);
        --on-primary-container: var(--md-on-primary-container);
        --secondary: var(--md-secondary);
        --on-secondary: var(--md-on-secondary);
        --secondary-container: var(--md-secondary-container);
        --on-secondary-container: var(--md-on-secondary-container);
        --tertiary: var(--md-tertiary);
        --tertiary-container: var(--md-tertiary-container);
        --error: var(--md-error);
        --error-container: var(--md-error-container);
        --on-error-container: var(--md-on-error-container);
        --background: var(--md-background);
        --surface: var(--md-surface);
        --on-surface: var(--md-on-surface);
        --surface-variant: var(--md-surface-variant);
        --on-surface-variant: var(--md-on-surface-variant);
        --outline: var(--md-outline);
        --outline-variant: var(--md-outline-variant);

        --success: var(--green);
        --warning: var(--yellow);
        --danger: var(--md-error);


        --shadow-lg: 0 4px 12px rgba(0,0,0,0.12);

        --radius-xs: 8px;
        --radius-sm: 12px;
        --radius-md: 16px;
        --radius-lg: 20px;
        --radius-full: 9999px;

        --elevation-1: 0 1px 2px rgba(0,0,0,0.06);
        --elevation-2: 0 2px 6px rgba(0,0,0,0.10);

        --transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);

        /* Header & Theme */
        --header-bg: var(--md-primary);
        --header-bg-dark: #0842A0;
        --header-shadow: 0 4px 24px rgba(11, 87, 208, 0.2), 0 1px 4px rgba(11, 87, 208, 0.1);
        --header-shadow-dark: 0 4px 24px rgba(0, 0, 0, 0.3), 0 1px 4px rgba(0, 0, 0, 0.2);
        --header-icon-bg: rgba(255, 255, 255, 0.18);
        --header-icon-shadow: 0 1px 6px rgba(0,0,0,0.08);
        --header-text: #FFFFFF;
        --header-subtext: rgba(255, 255, 255, 0.7);

        --theme-btn-bg: rgba(255, 255, 255, 0.13);
        --theme-btn-bg-hover: rgba(255, 255, 255, 0.25);
        --theme-btn-bg-dark: rgba(255, 255, 255, 0.1);
        --theme-btn-bg-dark-hover: rgba(255, 255, 255, 0.2);
        --theme-btn-shadow: 0 1px 6px rgba(0,0,0,0.06);
        --theme-btn-color: #FFFFFF;

        /* Focus rings */
        --focus-ring-light: rgba(11, 87, 208, 0.15);
        --focus-ring-dark: rgba(138, 180, 248, 0.2);

        /* Results hero */
        --hero-gradient: linear-gradient(135deg, var(--md-primary), #1A6BE0, var(--md-tertiary));
        --hero-gradient-dark: linear-gradient(135deg, #0A2E6F, #1A1F3A, #001D35);
        --hero-bg-circle: rgba(255,255,255,0.06);
        --hero-bg-circle2: rgba(255,255,255,0.04);
        --hero-icon-bg: rgba(255,255,255,0.15);
        --hero-text: #fff;
        --hero-subtext: rgba(255,255,255,0.7);
        --hero-subtext-strong: rgba(255,255,255,0.9);
        --hero-text-shadow: 0 2px 20px rgba(0,0,0,0.1);
        --hero-label: rgba(255,255,255,0.75);
        --hero-macro-bg: rgba(255,255,255,0.1);
        --hero-macro-bg-dark: rgba(0,0,0,0.2);
        --hero-macro-text: rgba(255,255,255,0.85);
        --hero-macro-strong: #fff;
        --hero-macro-unit: rgba(255,255,255,0.6);
        --hero-divider: rgba(255,255,255,0.2);

        /* PDF report */
        --pdf-bg: #ffffff;
        --pdf-text: #1F1F1F;
        --pdf-primary: #0B57D0;
        --pdf-secondary: #5E5E5E;
        --pdf-border: #E8E8E8;
        --pdf-item-bg: #F0F4F9;
        --pdf-outline: #8E918F;
        --pdf-badge-green-bg: #E6F4EA;
        --pdf-badge-green-text: #0F7823;
        --pdf-badge-yellow-bg: #FEF7E0;
        --pdf-badge-yellow-text: #E37400;
        --pdf-badge-red-bg: #FADAD6;
        --pdf-badge-red-text: #C5221F;
        --pdf-hero-gradient: linear-gradient(135deg, #0B57D0, #00639B);
    }

    /* ===== Gmail Material 3 — Dark Theme ===== */
    .dark-mode {
        --md-primary: #8AB4F8;
        --md-on-primary: #062E6F;
        --md-primary-container: #0842A0;
        --md-on-primary-container: #D3E3FD;

        --md-secondary: #C4C7C5;
        --md-on-secondary: #303030;
        --md-secondary-container: #494949;
        --md-on-secondary-container: #E8E8E8;

        --md-tertiary: #7FC8FF;
        --md-on-tertiary: #003355;
        --md-tertiary-container: #004A77;
        --md-on-tertiary-container: #C7E7FF;

        --md-error: #F9AB9E;
        --md-on-error: #601410;
        --md-error-container: #8C1D18;
        --md-on-error-container: #FADAD6;

        --md-background: #1F1F1F;
        --md-on-background: #E3E3E3;
        --md-surface: #1F1F1F;
        --md-on-surface: #E3E3E3;
        --md-surface-variant: #303030;
        --md-on-surface-variant: #C4C7C5;
        --md-outline: #8E918F;
        --md-outline-variant: #444746;

        --green: #81C995;
        --green-container: #1E3A2A;
        --yellow: #F7CB4D;
        --yellow-container: #3A2E00;
        --orange: #FFAD47;
        --orange-container: #422B00;
        --purple: #CE93D8;
        --purple-container: #3A1E5C;

        --primary: var(--md-primary);
        --on-primary: var(--md-on-primary);
        --primary-container: var(--md-primary-container);
        --on-primary-container: var(--md-on-primary-container);
        --secondary: var(--md-secondary);
        --on-secondary: var(--md-on-secondary);
        --secondary-container: var(--md-secondary-container);
        --on-secondary-container: var(--md-on-secondary-container);
        --tertiary: var(--md-tertiary);
        --tertiary-container: var(--md-tertiary-container);
        --error: var(--md-error);
        --error-container: var(--md-error-container);
        --on-error-container: var(--md-on-error-container);
        --background: var(--md-background);
        --surface: var(--md-surface);
        --on-surface: var(--md-on-surface);
        --surface-variant: var(--md-surface-variant);
        --on-surface-variant: var(--md-on-surface-variant);
        --outline: var(--md-outline);
        --outline-variant: var(--md-outline-variant);

        --success: var(--green);
        --warning: var(--yellow);
        --danger: var(--md-error);


        --shadow-lg: 0 4px 12px rgba(0,0,0,0.4);

        background-color: #1F1F1F;
        color: #E3E3E3;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Google Sans', 'Roboto', 'Nunito', sans-serif;
        color: var(--on-surface);
        background-color: var(--background);
        line-height: 1.6;
        overflow-x: hidden;
        transition: background-color 0.3s ease, color 0.3s ease;
    }

    h1, h2, h3, h4 {
        font-family: 'Google Sans', 'Roboto', 'Montserrat', sans-serif;
        font-weight: 700;
    }

    .container {
        max-width: 1400px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* ===== SVG Icons (встроенные, без внешних шрифтов) ===== */
    .svg-icon {
        display: inline-block;
        vertical-align: middle;
        line-height: 1;
    }

    .svg-icon svg {
        display: block;
        width: 24px;
        height: 24px;
        fill: currentColor;
    }

    .goal-icon .svg-icon svg {
        width: 28px;
        height: 28px;
    }

    /* ===== Header ===== */
    .header {
        padding: 20px 0;
        margin: 16px 0 28px;
        border-radius: var(--radius-lg);
        background: var(--header-bg);
        box-shadow: var(--header-shadow);
        position: relative;
        overflow: hidden;
        transition: var(--transition);
    }

    .dark-mode .header {
        background: var(--header-bg-dark);
        box-shadow: var(--header-shadow-dark);
    }

    /* ===== Logo ===== */
    .logo {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .logo-icon {
        width: 44px;
        height: 44px;
        background: var(--header-icon-bg);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--header-text);
        font-size: 24px;
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
        box-shadow: var(--header-icon-shadow);
    }

    .logo-text h1 {
        font-size: 22px;
        color: var(--header-text);
        transition: var(--transition);
        letter-spacing: -0.2px;
        font-weight: 600;
    }

    .dark-mode .logo-text h1 {
        color: var(--header-text);
    }

    .logo-text p {
        font-size: 13px;
        color: var(--header-subtext);
        font-weight: 400;
    }

    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        padding: 0 20px;
    }

    .header-left {
        display: flex;
        align-items: center;
        gap: 20px;
        flex-shrink: 0;
    }

    .header-right {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
    }

    /* ===== Theme toggle button (icon) ===== */
    .theme-toggle {
        display: flex;
        align-items: center;
    }

    .theme-icon-btn {
        width: 40px;
        height: 40px;
        border: none;
        border-radius: var(--radius-sm);
        background: var(--theme-btn-bg);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
        color: var(--theme-btn-color);
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
        box-shadow: var(--theme-btn-shadow);
    }

    .theme-icon-btn:hover {
        background: var(--theme-btn-bg-hover);
        transform: scale(1.05);
    }

    .theme-icon-btn:active {
        transform: scale(0.95);
    }

    .dark-mode .theme-icon-btn {
        background: var(--theme-btn-bg-dark);
    }

    .dark-mode .theme-icon-btn:hover {
        background: var(--theme-btn-bg-dark-hover);
    }

    .theme-icon-btn .theme-icon {
        font-size: 22px;
        line-height: 1;
    }

    /* ===== Form Elements ===== */
    .form-group {
        margin-bottom: 16px;
    }

    .form-label {
        display: block;
        margin-bottom: 6px;
        font-weight: 600;
        color: var(--on-surface);
        font-size: 13px;
        transition: var(--transition);
    }

    .dark-mode .form-label {
        color: var(--on-surface);
    }

    .form-control {
        width: 100%;
        padding: 10px 14px;
        border: 2px solid var(--outline-variant);
        border-radius: var(--radius-xs);
        font-size: 15px;
        font-family: 'Google Sans', 'Roboto', 'Nunito', sans-serif;
        transition: var(--transition);
        background: var(--surface);
        color: var(--on-surface);
    }

    .dark-mode .form-control {
        background: var(--surface);
        border-color: var(--outline-variant);
        color: var(--on-surface);
    }

.form-control:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px var(--focus-ring-light);
    }

    .dark-mode .form-control:focus {
        box-shadow: 0 0 0 3px var(--focus-ring-dark);
    }

    /* ===== Responsive ===== */
@media (max-width: 768px) {
        .header {
            margin: 10px 0 20px;
            border-radius: var(--radius-md);
        }

        .header-content {
            flex-direction: row;
            gap: 8px;
            padding: 0 12px;
        }

        .logo {
            gap: 10px;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 20px;
        }

        .logo-text h1 {
            font-size: 17px;
        }

        .logo-text p {
            font-size: 11px;
        }

        .theme-icon-btn {
            width: 36px;
            height: 36px;
        }

        .card {
            padding: 16px;
        }

        .calories-value {
            font-size: 50px;
        }

        .goal-selector {
            flex-direction: column;
        }

        .formula-selector {
            flex-direction: column;
        }
    }

    /* ===== Card Icon ===== */
    .card-icon {
        width: 48px;
        height: 48px;
        background: var(--primary-container);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--on-primary-container);
        font-size: 20px;
    }

    /* ===== Card Header ===== */
    .card-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 16px;
        position: relative;
    }

    .card-title {
        font-size: 18px;
        color: var(--on-surface);
        display: flex;
        align-items: center;
        gap: 10px;
        transition: var(--transition);
    }

    .dark-mode .card-title {
        color: var(--on-surface);
    }


    .card-badge {
        background: var(--secondary-container);
        color: var(--on-secondary-container);
        padding: 4px 12px;
        border-radius: var(--radius-full);
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.3px;
    }

    /* ===== Button ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: var(--primary);
        color: var(--on-primary);
        border: none;
        padding: 12px 24px;
        border-radius: var(--radius-full);
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        width: 100%;
        font-family: 'Google Sans', 'Roboto', 'Montserrat', sans-serif;
        margin-top: auto;
        letter-spacing: 0.3px;
    }

    .btn:hover {
        background: var(--primary-container);
        color: var(--on-primary-container);
        box-shadow: var(--elevation-2);
    }

    .btn:active {
        transform: scale(0.98);
    }

    .btn-secondary {
        background: var(--secondary-container);
        color: var(--on-secondary-container);
        cursor: pointer;
    }

    .btn-secondary:hover {
        background: var(--secondary);
        color: var(--on-secondary);
    }

    /* ===== Animation ===== */
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .fade-in {
        animation: fadeIn 0.6s ease forwards;
    }

    /* ===== Footer ===== */
    .footer {
        border-top: 1px solid var(--outline-variant);
        padding: 32px 0 28px;
        margin-top: 60px;
        text-align: center;
    }

    .footer-copy {
        color: var(--on-surface-variant);
        font-size: 13px;
        margin: 0 0 8px;
    }

    .footer-disclaimer {
        color: var(--on-surface-variant);
        font-size: 12px;
        margin: 0 auto;
        max-width: 440px;
        opacity: 0.55;
        line-height: 1.5;
    }

    /* ===== Visibility ===== */
    .hidden {
        display: none !important;
    }

    /* ===== Custom Scrollbar ===== */
    ::-webkit-scrollbar {
        width: 8px;
    }

    ::-webkit-scrollbar-track {
        background: var(--surface-variant);
    }

    ::-webkit-scrollbar-thumb {
        background: var(--outline);
        border-radius: var(--radius-full);
    }