/* =========================================================
   Unified Sign-In Page
   Dark gradient body + transparent hero (logo+slogan) + glass card (right)
   All colors via --vp-* tokens + local --sip-* design tokens
   ========================================================= */

:root {
    --sip-glass-bg: rgba(255, 255, 255, 0.86);
    --sip-glass-border: rgba(255, 255, 255, 0.6);
    --sip-glass-highlight: rgba(255, 255, 255, 0.7);
    --sip-glass-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --sip-input-bg: rgba(255, 255, 255, 0.96);
    --sip-logo-shadow: drop-shadow(2px 4px 6px rgba(0, 0, 0, 0.85));

    /* Course brand dot colors for hero chips */
    --sip-course-ap: #1E40AF;
    --sip-course-sat: #F59E0B;
    --sip-course-ib: #0D9488;
    --sip-course-ielts: #DC2626;
    --sip-course-imat: #10B981;
    --sip-course-bocconi: #312E81;
    --sip-course-okul-destek: #A855F7;
    --sip-course-tyt-ayt: #EC4899;
}

.sip-body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    color: var(--vp-text);
    background: linear-gradient(135deg,
        var(--vp-text) 0%,
        var(--vp-primary-hover) 50%,
        var(--vp-purple-hover) 100%);
    background-attachment: fixed;
}

/* ---------- Shell ---------- */
.sip-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

@media (max-width: 991.98px) {
    .sip-shell {
        grid-template-columns: 1fr;
    }
}

/* ---------- Left Hero (transparent over body gradient) ---------- */
.sip-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 3rem 2rem;
    color: var(--vp-text-on-primary);
}

@media (max-width: 991.98px) {
    .sip-hero {
        display: none;
    }
}

.sip-hero-content {
    text-align: center;
    max-width: 520px;
}

.sip-hero-logo {
    display: block;
    max-width: 300px;
    width: 100%;
    height: auto;
    margin: 0 auto 1.75rem;
    filter: var(--sip-logo-shadow);
}

.sip-hero-slogan {
    margin: 0;
    font-family: 'Playfair Display', Georgia, 'Times New Roman', serif;
    font-style: italic;
    font-weight: 500;
    font-size: clamp(1.55rem, 2.2vw, 2.1rem);
    line-height: 1.35;
    letter-spacing: 0.01em;
    color: var(--vp-text-on-primary);
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

.sip-hero-chips {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.75rem 0 0;
    padding: 0;
}

.sip-hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem 0.4rem 0.7rem;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--vp-text-on-primary);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--vp-radius-full);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.sip-hero-chip::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 8px currentColor;
    flex-shrink: 0;
}

.sip-hero-chip[data-course="ap"]::before           { color: var(--sip-course-ap); }
.sip-hero-chip[data-course="sat"]::before          { color: var(--sip-course-sat); }
.sip-hero-chip[data-course="ib"]::before           { color: var(--sip-course-ib); }
.sip-hero-chip[data-course="ielts"]::before        { color: var(--sip-course-ielts); }
.sip-hero-chip[data-course="imat"]::before         { color: var(--sip-course-imat); }
.sip-hero-chip[data-course="bocconi"]::before      { color: var(--sip-course-bocconi); }
.sip-hero-chip[data-course="okul-destek"]::before  { color: var(--sip-course-okul-destek); }
.sip-hero-chip[data-course="tyt-ayt"]::before      { color: var(--sip-course-tyt-ayt); }

.sip-hero-chip:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.45);
    transform: translateY(-1px);
}

/* ---------- Right Side (no background; body gradient shines through) ---------- */
.sip-form-side {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
}

/* ---------- Glass Card ---------- */
.sip-card {
    width: 100%;
    max-width: 520px;
    padding: 2.5rem 2.25rem;
    background: var(--sip-glass-bg);
    border: 1px solid var(--sip-glass-border);
    border-radius: var(--vp-radius-xl);
    box-shadow:
        var(--sip-glass-shadow),
        inset 0 1px 0 var(--sip-glass-highlight);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
}

.sip-card-header {
    margin-bottom: 1.5rem;
    text-align: center;
}

.sip-card-title {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin: 0 0 0.4rem;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--vp-text);
    letter-spacing: -0.01em;
}

.sip-title-icon {
    font-size: 1.35rem;
    color: var(--vp-primary);
    transform: translateY(-1px);
}

.sip-card-subtitle {
    margin: 0;
    min-height: 1.4em;
    color: var(--vp-text);
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.78;
    transition: opacity 0.2s ease;
}

/* ---------- User Type Pill Selector ---------- */
.sip-type-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    padding: 0.35rem;
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--vp-radius-lg);
}

.sip-type-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.65rem 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--vp-text-secondary);
    background: transparent;
    border: 0;
    border-radius: var(--vp-radius-md);
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.sip-type-pill:hover:not(.is-active) {
    color: var(--vp-text);
    background: rgba(255, 255, 255, 0.7);
}

.sip-type-pill.is-active {
    color: var(--vp-text-on-primary);
    background: var(--vp-primary);
    box-shadow: 0 2px 10px rgba(var(--vp-primary-rgb), 0.45);
}

.sip-type-pill:focus-visible {
    outline: 2px solid var(--vp-primary);
    outline-offset: 2px;
}

.sip-type-pill i {
    font-size: 1rem;
}

.sip-type-pill-label {
    white-space: nowrap;
}

/* Mobile type label — hidden by default, shown only on mobile */
.sip-mobile-type-label {
    display: none;
}

/* ---------- Form ---------- */
.sip-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sip-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.sip-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--vp-text);
    letter-spacing: 0.01em;
}

.sip-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.sip-input-icon {
    position: absolute;
    left: 0.9rem;
    color: var(--vp-text-muted);
    pointer-events: none;
    font-size: 0.95rem;
}

.sip-input {
    width: 100%;
    padding: 0.75rem 0.9rem 0.75rem 2.4rem;
    font-size: 0.95rem;
    color: var(--vp-text);
    background: var(--sip-input-bg);
    border: 1px solid var(--vp-input-border);
    border-radius: var(--vp-radius-md);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.sip-input:focus {
    outline: none;
    background: var(--vp-input-bg);
    border-color: var(--vp-input-focus);
    box-shadow: 0 0 0 3px var(--vp-primary-subtle);
}

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

.sip-password-toggle {
    position: absolute;
    right: 0.4rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.1rem;
    height: 2.1rem;
    color: var(--vp-text-secondary);
    background: transparent;
    border: 0;
    border-radius: var(--vp-radius-sm);
    cursor: pointer;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.sip-password-toggle:hover {
    color: var(--vp-text);
    background: rgba(255, 255, 255, 0.6);
}

.sip-password-toggle:focus-visible {
    outline: 2px solid var(--vp-primary);
    outline-offset: 1px;
}

/* ---------- Row (remember + forgot) ---------- */
.sip-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    min-height: 1.5rem;
    margin-top: 0.25rem;
}

.sip-check {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--vp-text);
    cursor: pointer;
    user-select: none;
}

.sip-check input {
    accent-color: var(--vp-primary);
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.sip-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--vp-primary);
    text-decoration: none;
    transition: color 0.15s ease;
}

.sip-link:hover {
    color: var(--vp-primary-hover);
    text-decoration: underline;
}

/* Keep layout height when link is toggled off */
.sip-link[hidden] {
    display: inline-block !important;
    visibility: hidden;
    pointer-events: none;
}

/* ---------- Error banner ---------- */
.sip-error {
    padding: 0.65rem 0.85rem;
    font-size: 0.88rem;
    color: var(--vp-danger-hover);
    background: var(--vp-danger-subtle);
    border: 1px solid var(--vp-danger);
    border-radius: var(--vp-radius-md);
}

.sip-error[hidden] {
    display: none !important;
}

/* ---------- Submit button ---------- */
.sip-submit {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--vp-text-on-primary);
    background: var(--vp-btn-primary-bg);
    border: 0;
    border-radius: var(--vp-radius-md);
    cursor: pointer;
    transition: background-color 0.15s ease, transform 0.05s ease, box-shadow 0.15s ease;
    margin-top: 0.5rem;
    box-shadow: 0 4px 14px rgba(var(--vp-primary-rgb), 0.35);
}

.sip-submit:hover:not(:disabled) {
    background: var(--vp-btn-primary-bg-hover);
    box-shadow: 0 6px 20px rgba(var(--vp-primary-rgb), 0.45);
}

.sip-submit:active:not(:disabled) {
    transform: translateY(1px);
}

.sip-submit:focus-visible {
    outline: 2px solid var(--vp-primary);
    outline-offset: 2px;
}

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

.sip-submit-spinner {
    display: none;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--vp-text-on-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: sip-spin 0.65s linear infinite;
}

.sip-submit.is-loading .sip-submit-label {
    opacity: 0.85;
}

.sip-submit.is-loading .sip-submit-label::after {
    content: '...';
    display: inline-block;
    width: 1.25em;
    text-align: left;
    vertical-align: bottom;
    clip-path: inset(0 100% 0 0);
    animation: sip-dots 1.4s steps(4, end) infinite;
}

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

@keyframes sip-dots {
    to { clip-path: inset(0 0 0 0); }
}

/* ---------- Footer (sign-up) — reserves height even when hidden ---------- */
.sip-footer {
    margin-top: 1.5rem;
    text-align: center;
    color: var(--vp-text-muted);
    font-size: 0.9rem;
}

.sip-footer a {
    color: var(--vp-primary);
    font-weight: 600;
    text-decoration: none;
    margin-left: 0.3rem;
}

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

.sip-footer[hidden] {
    display: block !important;
    visibility: hidden;
    pointer-events: none;
    user-select: none;
}

/* ---------- Mobile: full-bleed solid card, no glass, icon-only pills ---------- */
@media (max-width: 991.98px) {
    .sip-form-side {
        padding: 0;
        align-items: stretch;
    }

    .sip-card {
        display: flex;
        flex-direction: column;
        justify-content: center;
        max-width: none;
        width: 100%;
        min-height: 100vh;
        padding: 2.5rem 1.5rem;
        background: var(--vp-surface-1);
        border: 0;
        border-radius: 0;
        box-shadow: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .sip-mobile-type-label {
        display: block;
        margin: 0 0 0.55rem;
        font-size: 0.8rem;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.1em;
        text-align: center;
        color: var(--vp-text);
    }

    .sip-type-selector {
        background: var(--vp-surface-3);
        border-color: var(--vp-border);
    }

    .sip-type-pill {
        padding: 0.8rem 0.5rem;
        gap: 0;
    }

    .sip-type-pill:hover:not(.is-active) {
        background: var(--vp-surface-2);
    }

    .sip-type-pill-label {
        display: none;
    }

    .sip-type-pill i {
        font-size: 1.3rem;
    }

    .sip-input {
        background: var(--vp-input-bg);
    }
}

/* ---------- Narrow phone polish ---------- */
@media (max-width: 480px) {
    .sip-card {
        padding: 2rem 1.15rem;
    }

    .sip-card-title {
        font-size: 1.35rem;
    }
}