/* =============================================================
   SAMS Auth System — Frontend Styles
   Trigger Button · Dropdown · Modal · Forms
   ============================================================= */

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

:root {
    --sams-primary:      #2563eb;
    --sams-primary-dark: #1d4ed8;
    --sams-primary-light:#eff6ff;
    --sams-accent:       #0ea5e9;
    --sams-success:      #22c55e;
    --sams-error:        #ef4444;
    --sams-warning:      #f59e0b;
    --sams-agent-color:  #7c3aed;
    --sams-student-color:#2563eb;
    --sams-text:         #111827;
    --sams-text-muted:   #6b7280;
    --sams-border:       #e5e7eb;
    --sams-bg:           #ffffff;
    --sams-bg-soft:      #f9fafb;
    --sams-shadow-sm:    0 1px 3px rgba(0,0,0,.08);
    --sams-shadow-md:    0 4px 16px rgba(0,0,0,.12);
    --sams-shadow-lg:    0 20px 60px rgba(0,0,0,.18);
    --sams-radius:       12px;
    --sams-radius-sm:    8px;
    --sams-font:         'Plus Jakarta Sans', system-ui, sans-serif;
    --sams-transition:   .22s cubic-bezier(.4,0,.2,1);
}

/* ── Reset scoped ─────────────────────────────────────────── */
.sams-auth-trigger-wrap *,
.sams-modal-overlay * {
    box-sizing: border-box;
    font-family: var(--sams-font);
}

/* ================================================================
   TRIGGER BUTTON
   ================================================================ */
.sams-auth-trigger-wrap {
    position: relative;
    display: inline-flex;
}

.sams-auth-trigger-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px 9px 14px;
    background: var(--sams-primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--sams-transition), box-shadow var(--sams-transition), transform var(--sams-transition);
    white-space: nowrap;
    box-shadow: 0 2px 10px rgba(37,99,235,.35);
}

.sams-auth-trigger-btn:hover {
    background: var(--sams-primary-dark);
    box-shadow: 0 4px 18px rgba(37,99,235,.45);
    transform: translateY(-1px);
}

.sams-auth-trigger-btn:active {
    transform: translateY(0);
}

.sams-auth-caret {
    transition: transform var(--sams-transition);
    display: flex;
}

.sams-auth-trigger-wrap.dropdown-open .sams-auth-caret {
    transform: rotate(180deg);
}

/* Logged-in variant */
.sams-user-btn {
    background: var(--sams-bg);
    color: var(--sams-text);
    border: 1.5px solid var(--sams-border);
    box-shadow: var(--sams-shadow-sm);
}
.sams-user-btn:hover {
    background: var(--sams-bg-soft);
    box-shadow: var(--sams-shadow-md);
}

.sams-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--sams-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ================================================================
   DROPDOWN
   ================================================================ */
.sams-auth-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 240px;
    background: var(--sams-bg);
    border: 1px solid var(--sams-border);
    border-radius: var(--sams-radius);
    box-shadow: var(--sams-shadow-lg);
    overflow: hidden;
    opacity: 0;
    transform: translateY(-8px) scale(.97);
    pointer-events: none;
    transition: opacity var(--sams-transition), transform var(--sams-transition);
    z-index: 99999;
}

.sams-auth-dropdown.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.sams-dropdown-header {
    padding: 14px 16px 10px;
    border-bottom: 1px solid var(--sams-border);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sams-dropdown-header span {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--sams-text-muted);
}

.sams-dropdown-header strong {
    font-size: 14px;
    color: var(--sams-text);
}

.sams-dropdown-header small {
    font-size: 12px;
    color: var(--sams-text-muted);
}

.sams-dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 13px 16px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    text-decoration: none;
    color: var(--sams-text);
    transition: background var(--sams-transition);
}

.sams-dropdown-item:hover {
    background: var(--sams-bg-soft);
}

.sams-item-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--sams-radius-sm);
    background: var(--sams-primary-light);
    color: var(--sams-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--sams-transition);
}

.sams-dropdown-item[data-role="agent"] .sams-item-icon {
    background: #f3f0ff;
    color: var(--sams-agent-color);
}

.sams-item-text strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--sams-text);
}

.sams-item-text small {
    display: block;
    font-size: 12px;
    color: var(--sams-text-muted);
    margin-top: 1px;
}

.sams-role-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 4px;
}

.sams-role-student { background: var(--sams-primary-light); color: var(--sams-primary); }
.sams-role-agent   { background: #f3f0ff; color: var(--sams-agent-color); }

.sams-logout-btn .sams-item-icon {
    background: #fef2f2;
    color: var(--sams-error);
}

/* ================================================================
   MODAL OVERLAY
   ================================================================ */
.sams-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(0,0,0,.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity .28s ease;
}

.sams-modal-overlay:not([hidden]) {
    opacity: 1;
}

.sams-modal-overlay[hidden] {
    display: none !important;
}

.sams-modal-box {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 92vh;
    overflow-y: auto;
    background: var(--sams-bg);
    border-radius: 20px;
    padding: 36px 36px 32px;
    box-shadow: var(--sams-shadow-lg);
    transform: translateY(24px) scale(.97);
    transition: transform .3s cubic-bezier(.34,1.56,.64,1);
    scrollbar-width: thin;
}

.sams-modal-overlay:not([hidden]) .sams-modal-box {
    transform: translateY(0) scale(1);
}

/* ── Close button ─────────────────────────────────────────── */
.sams-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--sams-bg-soft);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sams-text-muted);
    transition: background var(--sams-transition), color var(--sams-transition);
}

.sams-modal-close:hover {
    background: #fee2e2;
    color: var(--sams-error);
}

/* ── Brand header ─────────────────────────────────────────── */
.sams-modal-brand {
    text-align: center;
    margin-bottom: 24px;
}

.sams-brand-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 12px;
    background: var(--sams-primary-light);
    color: var(--sams-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--sams-transition), color var(--sams-transition);
}

.sams-modal-box[data-role="agent"] .sams-brand-icon {
    background: #f3f0ff;
    color: var(--sams-agent-color);
}

.sams-brand-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--sams-text);
    margin: 0 0 4px;
    line-height: 1.2;
}

.sams-brand-sub {
    font-size: 13px;
    color: var(--sams-text-muted);
    margin: 0;
}

/* ================================================================
   ROLE TABS
   ================================================================ */
.sams-role-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    background: var(--sams-bg-soft);
    border-radius: var(--sams-radius-sm);
    padding: 4px;
}

.sams-role-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 12px;
    border: none;
    background: transparent;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--sams-text-muted);
    cursor: pointer;
    transition: all var(--sams-transition);
}

.sams-role-tab:hover:not(.active) {
    background: var(--sams-border);
    color: var(--sams-text);
}

.sams-role-tab.active {
    background: var(--sams-bg);
    color: var(--sams-primary);
    box-shadow: var(--sams-shadow-sm);
}

.sams-role-tab[data-role="agent"].active {
    color: var(--sams-agent-color);
}

/* ================================================================
   AUTH TABS (Login / Register)
   ================================================================ */
.sams-auth-tabs {
    position: relative;
    display: flex;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--sams-border);
}

.sams-auth-tab {
    flex: 1;
    padding: 10px;
    border: none;
    background: none;
    font-size: 14px;
    font-weight: 600;
    color: var(--sams-text-muted);
    cursor: pointer;
    transition: color var(--sams-transition);
    position: relative;
    z-index: 1;
}

.sams-auth-tab.active {
    color: var(--sams-primary);
}

.sams-tab-slider {
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50%;
    height: 2px;
    background: var(--sams-primary);
    border-radius: 2px 2px 0 0;
    transition: left var(--sams-transition), background var(--sams-transition);
}

.sams-tab-slider.agent-mode {
    background: var(--sams-agent-color);
}

.sams-auth-tab.active:nth-child(2) ~ .sams-tab-slider,
.sams-tab-slider.on-register {
    left: 50%;
}

/* ================================================================
   MESSAGE BOX
   ================================================================ */
.sams-auth-message {
    padding: 12px 16px;
    border-radius: var(--sams-radius-sm);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 18px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.5;
}

.sams-auth-message[hidden] { display: none !important; }

.sams-msg-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.sams-msg-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* ================================================================
   FORMS
   ================================================================ */
.sams-modal-box .sams-form {
    display: none;
}

.sams-modal-box .sams-form.active {
    display: block;
}
.sams-field-group {
    margin-bottom: 16px;
}

.sams-field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.sams-field-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--sams-text);
    margin-bottom: 6px;
}

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

.sams-input-icon {
    position: absolute;
    left: 12px;
    color: var(--sams-text-muted);
    pointer-events: none;
    flex-shrink: 0;
}

.sams-input-wrap input {
    width: 100%;
    padding: 11px 14px 11px 38px;
    border: 1.5px solid var(--sams-border);
    border-radius: var(--sams-radius-sm);
    font-size: 14px;
    color: var(--sams-text);
    background: var(--sams-bg);
    transition: border-color var(--sams-transition), box-shadow var(--sams-transition);
    outline: none;
    -webkit-appearance: none;
}

.sams-field-row .sams-field-group:last-child .sams-input-wrap input {
    padding-left: 14px;
}

.sams-input-wrap input:focus {
    border-color: var(--sams-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.sams-input-wrap input.error {
    border-color: var(--sams-error);
    box-shadow: 0 0 0 3px rgba(239,68,68,.1);
}

.sams-input-wrap input::placeholder {
    color: #d1d5db;
}

.sams-toggle-pw {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--sams-text-muted);
    padding: 4px;
    display: flex;
    align-items: center;
    transition: color var(--sams-transition);
}

.sams-toggle-pw:hover { color: var(--sams-primary); }

/* ── Form footer row ──────────────────────────────────────── */
.sams-form-footer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 13px;
}

.sams-remember {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--sams-text-muted);
    cursor: pointer;
}

.sams-remember input[type="checkbox"] {
    accent-color: var(--sams-primary);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

.sams-forgot-link {
    color: var(--sams-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--sams-transition);
}
.sams-forgot-link:hover { color: var(--sams-primary-dark); text-decoration: underline; }

/* ── Checkbox label ───────────────────────────────────────── */
.sams-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: var(--sams-text-muted);
    margin-bottom: 20px;
    cursor: pointer;
    line-height: 1.5;
}

.sams-checkbox-label input {
    margin-top: 2px;
    accent-color: var(--sams-primary);
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    cursor: pointer;
}

.sams-checkbox-label a {
    color: var(--sams-primary);
    font-weight: 600;
    text-decoration: none;
}

/* ── Password strength ────────────────────────────────────── */
.sams-pw-strength {
    margin: -8px 0 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sams-pw-strength[hidden] { display: none !important; }

.sams-pw-bar {
    flex: 1;
    height: 4px;
    background: var(--sams-border);
    border-radius: 4px;
    overflow: hidden;
}

.sams-pw-fill {
    height: 100%;
    border-radius: 4px;
    width: 0%;
    transition: width .35s ease, background .35s ease;
}

.sams-pw-fill.weak   { background: var(--sams-error);   width: 30%; }
.sams-pw-fill.fair   { background: var(--sams-warning);  width: 60%; }
.sams-pw-fill.strong { background: var(--sams-success);  width: 100%; }

.sams-pw-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    min-width: 40px;
}

.sams-pw-label.weak   { color: var(--sams-error); }
.sams-pw-label.fair   { color: var(--sams-warning); }
.sams-pw-label.strong { color: var(--sams-success); }

/* ================================================================
   SUBMIT BUTTON
   ================================================================ */
.sams-submit-btn {
    width: 100%;
    padding: 13px;
    background: var(--sams-primary);
    color: #fff;
    border: none;
    border-radius: var(--sams-radius-sm);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background var(--sams-transition), box-shadow var(--sams-transition), transform var(--sams-transition);
    box-shadow: 0 3px 12px rgba(37,99,235,.3);
    letter-spacing: .01em;
}

.sams-submit-btn:hover {
    background: var(--sams-primary-dark);
    box-shadow: 0 6px 20px rgba(37,99,235,.4);
    transform: translateY(-1px);
}

.sams-submit-btn:active {
    transform: translateY(0);
}

.sams-submit-btn:disabled {
    opacity: .7;
    cursor: not-allowed;
    transform: none;
}

.sams-submit-btn[data-role="agent"] {
    background: var(--sams-agent-color);
    box-shadow: 0 3px 12px rgba(124,58,237,.3);
}

.sams-submit-btn[data-role="agent"]:hover {
    background: #6d28d9;
    box-shadow: 0 6px 20px rgba(124,58,237,.4);
}

/* Spinner animation */
.sams-btn-loader { display: none; align-items: center; }
.sams-btn-loader.visible { display: flex; }

.sams-spinner {
    animation: sams-spin .7s linear infinite;
}

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

/* ================================================================
   AGENT MODE overrides
   ================================================================ */
.sams-modal-box[data-active-role="agent"] .sams-auth-tab.active,
.sams-modal-box[data-active-role="agent"] .sams-role-tab.active {
    color: var(--sams-agent-color);
}

.sams-modal-box[data-active-role="agent"] .sams-auth-tab.active ~ .sams-tab-slider,
.sams-modal-box[data-active-role="agent"] .sams-tab-slider {
    background: var(--sams-agent-color);
}

.sams-modal-box[data-active-role="agent"] .sams-input-wrap input:focus {
    border-color: var(--sams-agent-color);
    box-shadow: 0 0 0 3px rgba(124,58,237,.12);
}

.sams-modal-box[data-active-role="agent"] .sams-submit-btn {
    background: var(--sams-agent-color);
    box-shadow: 0 3px 12px rgba(124,58,237,.3);
}

.sams-modal-box[data-active-role="agent"] .sams-submit-btn:hover {
    background: #6d28d9;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 520px) {
    .sams-modal-box {
        padding: 28px 22px 24px;
        border-radius: 16px;
        max-height: 95vh;
    }

    .sams-field-row {
        grid-template-columns: 1fr;
    }

    .sams-auth-label {
        display: none;
    }

    .sams-auth-trigger-btn {
        padding: 9px 14px;
    }

    .sams-form-footer-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* ================================================================
   LOGIN REQUIRED NOTICE (student_dashboard / application_form)
   ================================================================ */
.sams-login-required {
    text-align: center;
    padding: 60px 32px;
    background: var(--sams-bg, #fff);
    border: 1.5px solid var(--sams-border, #e5e7eb);
    border-radius: 16px;
    max-width: 420px;
    margin: 40px auto;
}

.sams-login-required__icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: var(--sams-primary-light, #eff6ff);
    color: var(--sams-primary, #2563eb);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sams-login-required h3 {
    margin: 0 0 8px;
    font-size: 20px;
    font-weight: 700;
    color: #111827;
}

.sams-login-required p {
    margin: 0 0 28px;
    font-size: 15px;
    color: #6b7280;
    line-height: 1.6;
}

.sams-login-required__actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.sams-login-required__actions .sams-btn {
    padding: 11px 28px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all .2s ease;
    border: 2px solid transparent;
}

.sams-login-required__actions .sams-btn--primary {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}

.sams-login-required__actions .sams-btn--primary:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

.sams-login-required__actions .sams-btn--outline {
    background: transparent;
    color: #2563eb;
    border-color: #2563eb;
}

.sams-login-required__actions .sams-btn--outline:hover {
    background: #eff6ff;
}