/**
 * YSE - Youth School Engine Academic Design System
 * Inspired by Swiss/Nordic Clean Institutional Design
 * Conforms to: anti-ui-slop, high-end-visual-design, design-system
 * Strictly: NO purple/violet, NO cliché AI dark mode
 */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Arabic:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Canvas & Surfaces */
    --canvas-bg: #FBFBFD;
    --surface-card: #FFFFFF;
    --surface-subtle: #F8FAFC;
    --surface-hover: #F1F5F9;
    --surface-sunken: #EEF2F6;

    /* Academic Navy Scale (Institutional Trust) */
    --navy-950: #071224;
    --navy-900: #0B1B3D;
    --navy-800: #102654;
    --navy-700: #183775;
    --navy-600: #254F9E;
    --navy-100: #EBF1FC;
    --navy-50:  #F4F7FD;

    /* Typographic Slate Scale */
    --text-primary: #0C1E3C;
    --text-secondary: #334155;
    --text-muted: #64748B;
    --text-light: #94A3B8;

    /* Structural Hairlines */
    --border-hairline: rgba(12, 30, 60, 0.08);
    --border-default: #E2E8F0;
    --border-focus: #0C1E3C;

    /* Muted Purposeful Accents */
    --emerald-deep: #047857;
    --emerald-base: #059669;
    --emerald-subtle: #ECFDF5;
    --emerald-border: #A7F3D0;

    --amber-deep: #B45309;
    --amber-base: #D97706;
    --amber-subtle: #FFFBEB;
    --amber-border: #FDE68A;

    --crimson-deep: #9F1239;
    --crimson-base: #BE123C;
    --crimson-subtle: #FFF1F2;
    --crimson-border: #FECDD3;

    /* Spatial Shadows */
    --shadow-soft-xs: 0 1px 2px 0 rgba(12, 30, 60, 0.03);
    --shadow-soft-sm: 0 2px 6px 0 rgba(12, 30, 60, 0.04);
    --shadow-soft-md: 0 6px 20px -2px rgba(12, 30, 60, 0.06), 0 2px 6px -1px rgba(12, 30, 60, 0.03);
    --shadow-soft-lg: 0 16px 36px -4px rgba(12, 30, 60, 0.08), 0 4px 12px -2px rgba(12, 30, 60, 0.03);
    --shadow-soft-xl: 0 24px 48px -8px rgba(12, 30, 60, 0.10);

    /* Radii */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Typography */
    --font-latin: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-arabic: 'IBM Plex Sans Arabic', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Global Reset & Base */
body.academic-theme {
    background-color: var(--canvas-bg);
    color: var(--text-primary);
    font-family: var(--font-latin);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

[dir="rtl"] body.academic-theme,
body.academic-theme:lang(ar) {
    font-family: var(--font-arabic);
}

/* Double-Bezel Architectural Enclosure (From high-end-visual-design skill) */
.double-bezel-wrapper {
    background: #FFFFFF;
    padding: 8px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft-lg);
    border: 1px solid var(--border-hairline);
    position: relative;
    box-sizing: border-box;
}

.double-bezel-inner {
    background: var(--surface-card);
    border-radius: calc(var(--radius-xl) - 6px);
    border: 1px solid var(--border-default);
    padding: 36px 32px;
    box-sizing: border-box;
}

/* Academic Header & Badges */
.academic-brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--navy-50);
    border: 1px solid rgba(12, 30, 60, 0.08);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--navy-800);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.academic-brand-badge svg {
    width: 16px;
    height: 16px;
    color: var(--navy-700);
}

/* Role Selector Tabs */
.academic-role-nav {
    display: flex;
    background: var(--surface-subtle);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-hairline);
    margin-bottom: 28px;
    gap: 4px;
}

.academic-role-tab {
    flex: 1;
    text-align: center;
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid transparent;
}

.academic-role-tab:hover {
    color: var(--navy-900);
    background: rgba(255, 255, 255, 0.6);
}

.academic-role-tab.active {
    background: #FFFFFF;
    color: var(--navy-900);
    box-shadow: var(--shadow-soft-xs);
    border-color: var(--border-default);
}

/* Institutional Form Fields */
.academic-field {
    margin-bottom: 20px;
    text-align: left;
}

[dir="rtl"] .academic-field {
    text-align: right;
}

.academic-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--navy-900);
    margin-bottom: 7px;
}

.academic-input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.academic-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text-primary);
    background: #FFFFFF;
    border: 1.5px solid var(--border-default);
    border-radius: var(--radius-md);
    box-sizing: border-box;
    outline: none;
    transition: all 0.15s ease-in-out;
}

.academic-input:focus {
    border-color: var(--navy-800);
    box-shadow: 0 0 0 3px rgba(12, 30, 60, 0.08);
}

.academic-input::placeholder {
    color: var(--text-light);
}

/* Action Buttons */
.btn-academic-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 13px 20px;
    background: var(--navy-900);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    box-shadow: var(--shadow-soft-sm);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    gap: 8px;
}

.btn-academic-primary:hover {
    background: var(--navy-800);
    box-shadow: var(--shadow-soft-md);
    transform: translateY(-1px);
}

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

/* Notice & Alert Boxes */
.academic-alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 13.5px;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.4;
}

.academic-alert-danger {
    background: var(--crimson-subtle);
    border: 1px solid var(--crimson-border);
    color: var(--crimson-deep);
}

.academic-alert-success {
    background: var(--emerald-subtle);
    border: 1px solid var(--emerald-border);
    color: var(--emerald-deep);
}

/* Footer & Institutional Stamp */
.academic-auth-footer {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-hairline);
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

.academic-auth-footer a {
    color: var(--navy-800);
    text-decoration: none;
    font-weight: 600;
}

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