/**
 * PROACT CS — Survey Link Lookup
 * A focused, single-purpose lookup interface
 * Built on VVUSD UI Library design tokens
 */

/* ======================
   CUSTOM PROPERTIES
   ====================== */
:root {
    --sl-navy: #0f2647;
    --sl-navy-mid: #173462;
    --sl-cyan: #06B6D4;
    --sl-cyan-glow: rgba(6, 182, 212, 0.35);
    --sl-success: #10B981;
    --sl-success-glow: rgba(16, 185, 129, 0.25);
    --sl-id-bg: #0c1f3d;
}

/* ======================
   PAGE LAYOUT
   ====================== */
.sl-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-8) var(--space-4);
    background: var(--main-bg);
    background-image:
        radial-gradient(ellipse at 30% -10%, rgba(6, 182, 212, 0.07) 0%, transparent 55%),
        radial-gradient(ellipse at 70% 110%, rgba(23, 52, 98, 0.06) 0%, transparent 55%);
}

.sl-wrapper {
    width: 100%;
    max-width: 560px;
}

/* ======================
   HEADER
   ====================== */
.sl-header {
    background: linear-gradient(160deg, var(--sl-navy) 0%, var(--sl-navy-mid) 100%);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: var(--space-10) var(--space-8);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.sl-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.sl-header::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--sl-cyan), var(--color-primary), var(--sl-cyan));
}

.sl-header > * {
    position: relative;
    z-index: 1;
}

.sl-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.sl-tag-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--sl-cyan);
    box-shadow: 0 0 8px var(--sl-cyan-glow);
}

.sl-tag-text {
    font-size: 0.6875rem;
    font-weight: var(--font-weight-bold);
    color: var(--sl-cyan);
    text-transform: uppercase;
    letter-spacing: 0.25em;
}

.sl-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: #fff;
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    margin-bottom: var(--space-2);
}

.sl-header h1 span {
    color: var(--sl-cyan);
}

.sl-subtitle {
    font-size: var(--font-size-sm);
    color: rgba(191, 219, 254, 0.7);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.02em;
    margin-bottom: 0;
}

/* ======================
   GLASS CARD (Form)
   ====================== */
.lookup-card {
    position: relative;
    background: var(--glass-bg-dark);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    backdrop-filter: saturate(1.2) blur(var(--glass-blur));
    -webkit-backdrop-filter: saturate(1.2) blur(var(--glass-blur));
    box-shadow: var(--shadow-xl);
    isolation: isolate;
    overflow: hidden;
}

.lookup-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: #fff;
    z-index: 0;
    pointer-events: none;
}

.lookup-card > * {
    position: relative;
    z-index: 2;
}

.sl-form-inner {
    padding: var(--space-10) var(--space-8);
}

/* Section header */
.sl-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.sl-section-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(6, 182, 212, 0.08);
    border-radius: var(--radius-md);
    color: var(--sl-navy-mid);
    flex-shrink: 0;
}

.sl-section-icon svg {
    width: 20px;
    height: 20px;
}

.sl-section-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--sl-navy-mid);
    letter-spacing: var(--letter-spacing-tight);
}

.sl-instructions {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-8);
}

/* ======================
   EMAIL FIELD
   ====================== */
.sl-field {
    margin-bottom: var(--space-6);
}

.sl-field-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    margin-bottom: var(--space-2);
}

.sl-input-wrap {
    position: relative;
}

.sl-input-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition-base);
}

.sl-input-icon svg {
    width: 18px;
    height: 18px;
}

.sl-field-input {
    width: 100%;
    padding: var(--space-4) var(--space-4) var(--space-4) calc(var(--space-4) + 26px);
    background: var(--main-bg);
    border: 2px solid rgba(229, 231, 235, 0.8);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    font-weight: var(--font-weight-medium);
    color: var(--sl-navy-mid);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.sl-field-input:focus {
    outline: none;
    border-color: var(--sl-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.12);
    background: #fff;
}

.sl-field-input:focus ~ .sl-input-icon {
    color: var(--sl-cyan);
}

.sl-field-input::placeholder {
    color: var(--text-muted);
    font-weight: var(--font-weight-normal);
}

.sl-field-input.error {
    border-color: var(--color-danger);
}

.sl-field-input.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.sl-field-error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: var(--space-2);
    display: none;
}

.sl-field-error.visible {
    display: block;
    animation: slFadeUp 0.2s ease;
}

/* ======================
   SUBMIT BUTTON
   ====================== */
.sl-submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-5);
    background: linear-gradient(135deg, var(--sl-navy-mid), var(--sl-navy));
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px rgba(15, 38, 71, 0.25);
    letter-spacing: 0.01em;
}

.sl-submit-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sl-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 38, 71, 0.3);
}

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

.sl-submit-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ======================
   RESULTS CARD
   ====================== */
.sl-results-card {
    width: 100%;
    position: relative;
    background: var(--glass-bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: saturate(1.2) blur(var(--glass-blur));
    -webkit-backdrop-filter: saturate(1.2) blur(var(--glass-blur));
    box-shadow: var(--shadow-xl);
    isolation: isolate;
    overflow: hidden;
    animation: slCardReveal 0.4s ease;
}

.sl-results-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: #fff;
    z-index: 0;
    pointer-events: none;
}

.sl-results-card > * {
    position: relative;
    z-index: 2;
}

/* Results header strip */
.sl-results-strip {
    background: linear-gradient(135deg, var(--sl-navy-mid), var(--sl-navy));
    padding: var(--space-8) var(--space-8) var(--space-6);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.sl-results-strip::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 120%, rgba(16, 185, 129, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.sl-results-strip > * {
    position: relative;
    z-index: 1;
}

.sl-check-ring {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-4);
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.15);
    border: 2px solid rgba(16, 185, 129, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: slPulseIn 0.5s ease;
}

.sl-check-ring svg {
    width: 28px;
    height: 28px;
    color: var(--sl-success);
}

.sl-results-strip h2 {
    font-size: var(--font-size-xl);
    color: #fff;
    margin-bottom: var(--space-1);
    letter-spacing: var(--letter-spacing-tight);
}

.sl-results-strip p {
    font-size: var(--font-size-sm);
    color: rgba(191, 219, 254, 0.65);
    margin-bottom: 0;
}

/* Results body */
.sl-results-body {
    padding: var(--space-8);
}

/* Study ID badge */
.sl-id-badge {
    background: var(--sl-id-bg);
    border-radius: var(--radius-md);
    padding: var(--space-5) var(--space-6);
    margin-bottom: var(--space-6);
    text-align: center;
    border: 1px solid rgba(6, 182, 212, 0.15);
    position: relative;
    overflow: hidden;
}

.sl-id-badge::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--sl-cyan-glow), transparent);
}

.sl-id-label {
    font-size: 0.625rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--sl-cyan);
    margin-bottom: var(--space-2);
}

.sl-id-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: #fff;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    letter-spacing: 0.08em;
}

/* School row */
.sl-school-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-6);
}

.sl-school-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.sl-school-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

/* Survey CTA button */
.sl-survey-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-5) var(--space-6);
    background: linear-gradient(135deg, var(--sl-success), #059669);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 16px var(--sl-success-glow);
    letter-spacing: 0.01em;
}

.sl-survey-cta svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sl-survey-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px var(--sl-success-glow);
    color: #fff;
}

.sl-survey-cta:active {
    transform: scale(0.98);
}

/* Search again */
.sl-search-again {
    display: block;
    width: 100%;
    padding: var(--space-4);
    margin-top: var(--space-4);
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    letter-spacing: 0.01em;
}

.sl-search-again:hover {
    border-color: var(--text-muted);
    color: var(--text-primary);
    background: var(--main-bg);
}

/* ======================
   ERROR CARD
   ====================== */
.sl-error-card {
    width: 100%;
    position: relative;
    background: var(--glass-bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: saturate(1.2) blur(var(--glass-blur));
    -webkit-backdrop-filter: saturate(1.2) blur(var(--glass-blur));
    box-shadow: var(--shadow-xl);
    isolation: isolate;
    overflow: hidden;
    text-align: center;
    padding: var(--space-12) var(--space-8);
    animation: slCardReveal 0.4s ease;
}

.sl-error-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: #fff;
    z-index: 0;
    pointer-events: none;
}

.sl-error-card > * {
    position: relative;
    z-index: 2;
}

.sl-error-ring {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-5);
    border-radius: 50%;
    background: rgba(239, 68, 68, 0.08);
    border: 2px solid rgba(239, 68, 68, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sl-error-ring svg {
    width: 30px;
    height: 30px;
    color: var(--color-danger);
}

.sl-error-card h2 {
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    letter-spacing: var(--letter-spacing-tight);
}

.sl-error-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 380px;
    margin: 0 auto var(--space-8);
}

.sl-try-again {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-10);
    background: linear-gradient(135deg, var(--sl-navy-mid), var(--sl-navy));
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px rgba(15, 38, 71, 0.2);
}

.sl-try-again:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(15, 38, 71, 0.25);
}

.sl-try-again:active {
    transform: scale(0.98);
}

/* ======================
   FOOTER
   ====================== */
.sl-page-footer {
    text-align: center;
    margin-top: var(--space-8);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.sl-page-footer p {
    margin-bottom: 0;
}

/* ======================
   SPINNER
   ====================== */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ======================
   ANIMATIONS
   ====================== */
@keyframes slFadeUp {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slCardReveal {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slPulseIn {
    0% { transform: scale(0.4); opacity: 0; }
    60% { transform: scale(1.15); }
    100% { transform: scale(1); opacity: 1; }
}

/* ======================
   GLASS FALLBACK
   ====================== */
@supports not (backdrop-filter: blur(1px)) {
    .lookup-card,
    .sl-results-card,
    .sl-error-card {
        background: rgba(255, 255, 255, 0.97);
    }
}

/* ======================
   RESPONSIVE — Tablet
   ====================== */
@media (max-width: 768px) {
    .sl-page {
        padding: var(--space-4) var(--space-3);
    }

    .sl-header {
        padding: var(--space-8) var(--space-6);
        border-radius: var(--radius) var(--radius) 0 0;
    }

    .sl-header h1 {
        font-size: var(--font-size-2xl);
    }

    .sl-form-inner {
        padding: var(--space-8) var(--space-6);
    }

    .sl-results-strip {
        padding: var(--space-6);
    }

    .sl-results-body {
        padding: var(--space-6);
    }

    .sl-error-card {
        padding: var(--space-8) var(--space-6);
    }

    .lookup-card {
        border-radius: 0 0 var(--radius) var(--radius);
    }
}

/* ======================
   RESPONSIVE — Small Mobile
   ====================== */
@media (max-width: 380px) {
    .sl-page {
        padding: var(--space-3) var(--space-2);
    }

    .sl-header {
        padding: var(--space-6) var(--space-4);
    }

    .sl-header h1 {
        font-size: var(--font-size-xl);
    }

    .sl-form-inner {
        padding: var(--space-6) var(--space-4);
    }

    .sl-id-value {
        font-size: var(--font-size-xl);
    }

    .sl-id-badge {
        padding: var(--space-4);
    }

    .sl-results-strip {
        padding: var(--space-5) var(--space-4);
    }

    .sl-results-body {
        padding: var(--space-5) var(--space-4);
    }

    .sl-survey-cta {
        font-size: var(--font-size-base);
        padding: var(--space-4);
    }
}

/* ======================
   REDUCE MOTION
   ====================== */
@media (prefers-reduced-motion: reduce) {
    .sl-results-card,
    .sl-error-card {
        animation: none;
    }

    .sl-check-ring {
        animation: none;
    }

    .sl-submit-btn:hover,
    .sl-survey-cta:hover,
    .sl-try-again:hover {
        transform: none;
    }
}