/* ===========================================================
   Free Health Check-up Camp - Modern Design System
   =========================================================== */

:root {
    /* Primary Palette: Teal & Emerald */
    --color-primary-50:  #f0fdfa;
    --color-primary-100: #ccfbf1;
    --color-primary-200: #99f6e4;
    --color-primary-500: #14b8a6;
    --color-primary-600: #0d9488;
    --color-primary-700: #0f766e;
    --color-primary-900: #134e4a;

    --color-success-50:  #ecfdf5;
    --color-success-100: #d1fae5;
    --color-success-500: #10b981;
    --color-success-600: #059669;
    --color-success-700: #047857;

    /* Neutral Scale: Slate */
    --color-slate-50:  #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-300: #cbd5e1;
    --color-slate-400: #94a3b8;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;

    /* Semantic Tokens */
    --color-bg:           var(--color-slate-50);
    --color-surface:      #ffffff;
    --color-surface-alt:  var(--color-slate-50);
    --color-border:       var(--color-slate-200);
    --color-border-hover: var(--color-slate-300);
    --color-text:         var(--color-slate-800);
    --color-text-muted:   var(--color-slate-500);
    --color-text-heading: var(--color-slate-900);

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;

    /* Shadows */
    --shadow-sm:  0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md:  0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg:  0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --shadow-xl:  0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --shadow-focus: 0 0 0 3px rgba(20, 184, 166, 0.2);

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Radii */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 0.9375rem;
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* ---- Decorative Background Blobs ---- */
.bg-blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    z-index: 0;
    pointer-events: none;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-primary-200), transparent 70%);
    top: -10%;
    right: -10%;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-success-100), transparent 70%);
    bottom: -5%;
    left: -5%;
}

/* ---- Promo Bar ---- */
.promo-bar {
    position: relative;
    z-index: 10;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) 0;
    box-shadow: var(--shadow-sm);
}

.promo-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-success-500));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.brand-title {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-text-heading);
    letter-spacing: -0.01em;
}

.brand-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.promo-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.device-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    background: var(--color-slate-100);
    color: var(--color-slate-600);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
}

/* ---- Registration Card ---- */
.registration-card {
    position: relative;
    z-index: 5;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
}

.registration-card .card-header {
    background: transparent;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-8) var(--space-8) var(--space-6);
    text-align: center;
}

.card-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-text-heading);
    letter-spacing: -0.025em;
    margin-bottom: var(--space-2);
}

.card-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin: 0;
}

.registration-card .card-body {
    padding: var(--space-8);
}

.registration-card .card-footer {
    background: var(--color-surface-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-8);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.footer-content a {
    color: var(--color-primary-600);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.footer-content a:hover {
    color: var(--color-primary-700);
    text-decoration: underline;
}

.footer-content i {
    color: var(--color-primary-500);
    font-size: 1rem;
}

/* ---- Form Sections ---- */
.form-section {
    border: none;
    padding: 0;
    margin-bottom: var(--space-8);
}

.form-section:last-of-type {
    margin-bottom: var(--space-6);
}

.section-label {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary-700);
    margin-bottom: var(--space-5);
    padding: 0;
    border: none;
}

.section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-primary-50);
    color: var(--color-primary-700);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    border: 1px solid var(--color-primary-200);
}

/* ---- Floating-style Labels ---- */
.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-heading);
    margin-bottom: var(--space-2);
}

.form-label .text-danger {
    color: #ef4444 !important;
}

/* ---- Inputs ---- */
.form-control,
.form-select {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.65rem 0.875rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    line-height: 1.5;
}

.form-control::placeholder {
    color: var(--color-slate-400);
    font-weight: 400;
}

.form-control:hover,
.form-select:hover {
    border-color: var(--color-border-hover);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary-500);
    box-shadow: var(--shadow-focus);
    background-color: var(--color-surface);
    color: var(--color-text);
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: #f87171;
    box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.invalid-feedback {
    font-size: 0.8125rem;
    font-weight: 500;
    color: #ef4444;
    margin-top: var(--space-1);
}

/* ---- Segmented Control (Radio Buttons) ---- */
.segmented-control {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.segment-option {
    flex: 1;
    min-width: 140px;
    cursor: pointer;
    position: relative;
}

.segment-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.segment-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-5) var(--space-4);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast);
    text-align: center;
    height: 100%;
}

.segment-box i {
    font-size: 1.75rem;
    color: var(--color-slate-400);
    transition: color var(--transition-fast);
}

.segment-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-text-heading);
}

.segment-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.segment-option:hover .segment-box {
    border-color: var(--color-primary-300);
    background: var(--color-primary-50);
}

.segment-option:hover .segment-box i {
    color: var(--color-primary-500);
}

.segment-option input[type="radio"]:checked + .segment-box {
    border-color: var(--color-primary-500);
    background: var(--color-primary-50);
    box-shadow: var(--shadow-focus);
}

.segment-option input[type="radio"]:checked + .segment-box i,
.segment-option input[type="radio"]:checked + .segment-box .segment-title {
    color: var(--color-primary-700);
}

.segment-option input[type="radio"]:focus-visible + .segment-box {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* ---- Submit Button ---- */
.form-actions {
    margin-top: var(--space-8);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.btn-submit {
    width: 100%;
    max-width: 360px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, var(--color-success-600) 0%, var(--color-success-700) 100%);
    border: none;
    border-radius: var(--radius-xl);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: -0.01em;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(5, 150, 105, 0.35);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(5, 150, 105, 0.45);
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-submit .btn-loader {
    display: none;
}

.btn-submit.is-loading .btn-text {
    opacity: 0;
}

.btn-submit.is-loading .btn-loader {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    position: absolute;
    inset: 0;
    justify-content: center;
    font-size: 0.95rem;
    font-weight: 600;
}

.help-text {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-align: center;
    margin: 0;
    font-weight: 500;
}

.help-text i {
    color: var(--color-success-500);
}

/* ---- Modal ---- */
.modal-content {
    border: none;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.modal-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-10) var(--space-8) var(--space-6);
    border-bottom: none;
    background: linear-gradient(180deg, var(--color-success-50), var(--color-surface));
}

.modal-success-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-success-500), var(--color-success-600));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2.25rem;
    margin-bottom: var(--space-4);
    box-shadow: 0 8px 24px rgba(5, 150, 105, 0.3);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-success-700);
    margin: 0;
    letter-spacing: -0.02em;
}

.modal-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin: var(--space-1) 0 0;
}

.modal-body {
    padding: var(--space-4) var(--space-8) var(--space-8);
}

.ticket {
    text-align: center;
    padding: var(--space-5) var(--space-4);
    background: var(--color-surface-alt);
    border: 1.5px dashed var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.ticket-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
}

.ticket-value {
    font-weight: 700;
    color: var(--color-text-heading);
    font-size: 1.05rem;
    line-height: 1.4;
}

.ticket-value.reg-no {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    color: var(--color-success-700);
    letter-spacing: 0.05em;
}

.ticket-row {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.ticket-col {
    flex: 1;
    text-align: center;
    padding: var(--space-4);
    background: var(--color-surface-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.ticket-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
    padding: var(--space-3) var(--space-4);
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: var(--radius-md);
    color: #92400e;
}

.ticket-hint i {
    font-size: 1rem;
    flex-shrink: 0;
}

.modal-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8) var(--space-8);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface-alt);
}

.btn-success-modal {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.75rem 2.5rem;
    background: linear-gradient(135deg, var(--color-success-600), var(--color-success-700));
    border: none;
    border-radius: var(--radius-xl);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-success-modal:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(5, 150, 105, 0.4);
}

.modal-footer-text {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin: 0;
    font-weight: 500;
}

.modal-footer-text a {
    color: var(--color-primary-600);
    text-decoration: none;
    font-weight: 600;
}

.modal-footer-text a:hover {
    text-decoration: underline;
}

/* ---- Alert ---- */
.alert {
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--space-3) var(--space-4);
}

.alert-danger {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

/* ---- Responsive ---- */
@media (max-width: 576px) {
    .blob-1, .blob-2 {
        display: none;
    }

    .promo-bar {
        padding: var(--space-3) 0;
    }

    .promo-brand {
        gap: var(--space-2);
    }

    .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .brand-title {
        font-size: 0.95rem;
    }

    .device-badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }

    .registration-card .card-header {
        padding: var(--space-6) var(--space-5) var(--space-4);
    }

    .card-title {
        font-size: 1.4rem;
    }

    .card-subtitle {
        font-size: 0.875rem;
    }

    .registration-card .card-body {
        padding: var(--space-5);
    }

    .registration-card .card-footer {
        padding: var(--space-3) var(--space-5);
    }

    .form-section {
        margin-bottom: var(--space-6);
    }

    .section-label {
        font-size: 0.8rem;
        margin-bottom: var(--space-4);
    }

    .segmented-control {
        flex-direction: column;
    }

    .segment-option {
        min-width: auto;
    }

    .segment-box {
        flex-direction: row;
        justify-content: flex-start;
        text-align: left;
        padding: var(--space-3) var(--space-4);
    }

    .segment-box i {
        font-size: 1.25rem;
    }

    .segment-desc {
        display: none;
    }

    .ticket-row {
        flex-direction: column;
        gap: var(--space-3);
    }

    .modal-body,
    .modal-footer {
        padding-left: var(--space-5);
        padding-right: var(--space-5);
    }

    .modal-header {
        padding: var(--space-8) var(--space-5) var(--space-4);
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .registration-card .card-header {
        padding: var(--space-7) var(--space-6) var(--space-5);
    }

    .registration-card .card-body {
        padding: var(--space-6);
    }
}