/*
    Họ và tên: Trần Văn Thành - MSV: 23103100076 - Lớp: TIN17A2HN
    Nội dung: CSS các trang xác thực (Login, Register...)
*/

:root {
    --auth-primary-accent: #3b82f6;
    --uneti-muted: #94a3b8;
    --uneti-danger-bg: #fef2f2;
    --uneti-text-heading: #0f172a;
    --uneti-bg-page: #f1f5f9;
}

/* 1. Nền trang xác thực toàn màn hình */
body.auth-body,
body:has(.auth-card),
body:has(.login-card),
body:has(.register-card),
body:has(.forgot-card),
body:has(.reset-card),
body:has(.change-card) {
    min-height: 100vh;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--uneti-bg-page);
    background-image: 
        linear-gradient(135deg, rgba(239, 246, 255, 0.45) 0%, rgba(219, 234, 254, 0.55) 100%),
        url('/images/auth-bg.webp');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    background-attachment: fixed;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2.5rem 1rem;
    margin: 0;
    position: relative;
    box-sizing: border-box;
}

/* 2. Glassmorphism Card xác thực */
.auth-card,
.login-card,
.forgot-card,
.reset-card,
.change-card {
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.85);
    border-radius: 24px;
    box-shadow: 
        0 20px 40px -15px rgba(15, 23, 42, 0.16),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
    width: 100%;
    max-width: 440px;
    padding: 2.5rem 2.25rem;
    position: relative;
    z-index: 10;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-sizing: border-box;
}

.auth-card-wide,
.register-card {
    max-width: 530px;
    padding: 2.25rem 2.25rem;
}

/* 3. Logo Badge nhận diện */
.uneti-logo-badge,
.logo-badge {
    width: 58px;
    height: 58px;
    background: linear-gradient(135deg, var(--uneti-primary) 0%, var(--auth-primary-accent, #3b82f6) 100%);
    color: #ffffff;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 10px 22px -6px rgba(29, 78, 216, 0.38);
    border: 3px solid #ffffff;
    margin: 0 auto;
}

/* 4. Tiêu đề khối xác thực */
.header-title {
    color: var(--uneti-text-heading);
    font-size: 1.45rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-top: 0.75rem;
    margin-bottom: 0.25rem;
}

.header-subtitle {
    color: var(--uneti-text-muted);
    font-size: 13.5px;
    font-weight: 500;
    line-height: 1.45;
}

/* 5. Nhãn trường nhập liệu */
.form-label-custom {
    color: #334155;
    font-size: 13.5px;
    font-weight: 600;
    display: block;
    margin-bottom: 0.45rem;
}

.auth-card-wide .form-label-custom,
.register-card .form-label-custom {
    font-size: 13px;
    margin-bottom: 0.35rem;
}

/* 6. Nhóm ô nhập liệu & Biểu tượng */
.custom-input-group {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.custom-input-group .input-icon-start {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--uneti-muted);
    font-size: 1.15rem;
    pointer-events: none;
    z-index: 5;
    transition: color 0.2s ease;
}

.auth-card-wide .custom-input-group .input-icon-start,
.register-card .custom-input-group .input-icon-start {
    left: 14px;
    font-size: 1.1rem;
}

.custom-input-group:focus-within .input-icon-start {
    color: var(--uneti-primary-hover);
}

.custom-input-group .form-control.custom-input {
    width: 100%;
    height: 48px;
    padding-left: 46px;
    padding-right: 46px;
    border-radius: 12px;
    border: 1.5px solid var(--uneti-border);
    background-color: #f8fafc;
    font-size: 14.5px;
    font-family: inherit;
    color: var(--uneti-text-main);
    transition: all 0.2s ease-in-out;
}

.auth-card-wide .custom-input-group .form-control.custom-input,
.register-card .custom-input-group .form-control.custom-input {
    height: 46px;
    padding-left: 42px;
    padding-right: 42px;
    font-size: 14px;
}

.custom-input-group .form-control.custom-input.no-right-icon {
    padding-right: 16px;
}

.custom-input-group .form-control.custom-input::placeholder {
    color: var(--uneti-muted);
    font-size: 14px;
    font-weight: 400;
}

.custom-input-group .form-control.custom-input:focus {
    background-color: #ffffff;
    border-color: var(--auth-primary-accent, #3b82f6);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
    color: var(--uneti-text-heading);
    outline: none;
}

/* 7. Định dạng lỗi Validation */
.custom-input-group .form-control.custom-input.input-validation-error,
.form-control.input-validation-error {
    border-color: var(--uneti-danger) !important;
    background-color: var(--uneti-danger-bg) !important;
}

.custom-input-group .form-control.custom-input.input-validation-error:focus,
.form-control.input-validation-error:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12) !important;
    border-color: var(--uneti-danger) !important;
}

.field-validation-error {
    color: var(--uneti-danger);
    font-size: 12.5px;
    font-weight: 500;
    margin-top: 4px;
    display: block;
    line-height: 1.3;
}

.field-validation-valid {
    display: none !important;
}

/* 8. Nút ẩn/hiện mật khẩu */
.btn-toggle-eye {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    padding: 6px 8px;
    color: var(--uneti-muted);
    font-size: 1.15rem;
    cursor: pointer;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.btn-toggle-eye:hover {
    color: #334155;
    background-color: var(--uneti-border);
}

/* 9. Nút Submit hành động */
.btn-submit-auth,
.btn-submit-login,
.btn-submit-register,
.btn-submit-change,
.btn-submit-action {
    background: linear-gradient(135deg, var(--uneti-primary) 0%, var(--uneti-primary-hover) 100%);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    height: 48px;
    font-size: 15.5px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 8px 18px -4px rgba(29, 78, 216, 0.35);
    transition: all 0.2s ease;
    width: 100%;
    cursor: pointer;
    text-decoration: none;
}

.btn-submit-auth:hover,
.btn-submit-login:hover,
.btn-submit-register:hover,
.btn-submit-change:hover,
.btn-submit-action:hover {
    background: linear-gradient(135deg, var(--uneti-primary-hover) 0%, var(--uneti-primary) 100%);
    box-shadow: 0 10px 22px -4px rgba(29, 78, 216, 0.45);
    transform: translateY(-1px);
    color: #ffffff;
}

.btn-submit-auth:active,
.btn-submit-login:active,
.btn-submit-register:active,
.btn-submit-change:active,
.btn-submit-action:active {
    transform: translateY(0);
}

.hover-underline:hover {
    text-decoration: underline !important;
}

/* 10. Thanh đo độ mạnh mật khẩu */
.password-strength-bar {
    height: 4px;
    background: var(--uneti-border);
    border-radius: 4px;
    overflow: hidden;
}

.password-strength-progress {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 4px;
}

/* 11. Khối tài khoản mẫu dùng thử */
.demo-accounts-box {
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    border-radius: 14px;
    padding: 12px 14px;
}

.demo-pills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

@media (min-width: 576px) {
    .demo-pills-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.demo-pill {
    border: 1.5px solid transparent;
    border-radius: 8px;
    height: 38px;
    padding: 0 6px;
    font-size: 12.5px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: all 0.18s ease;
    cursor: pointer;
    text-decoration: none;
    width: 100%;
    box-sizing: border-box;
    background: #ffffff;
}

.demo-pill:hover {
    transform: translateY(-1px);
}

.demo-pill-admin {
    background: #fef2f2;
    color: #b91c1c;
    border-color: #fecaca;
}
.demo-pill-admin:hover {
    background: #fee2e2;
}
.demo-pill-admin.is-active {
    border-color: #dc2626 !important;
    background: #fee2e2 !important;
    box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px rgba(220, 38, 38, 0.35);
}

.demo-pill-staff {
    background: #eff6ff;
    color: #1d4ed8;
    border-color: #bfdbfe;
}
.demo-pill-staff:hover {
    background: #dbeafe;
}
.demo-pill-staff.is-active {
    border-color: #2563eb !important;
    background: #dbeafe !important;
    box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px rgba(37, 99, 235, 0.35);
}

.demo-pill-student {
    background: #ecfdf5;
    color: #047857;
    border-color: #a7f3d0;
}
.demo-pill-student:hover {
    background: #d1fae5;
}
.demo-pill-student.is-active {
    border-color: #059669 !important;
    background: #d1fae5 !important;
    box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px rgba(5, 150, 105, 0.35);
}

.demo-pill-locked {
    background: #f1f5f9;
    color: #64748b;
    border-color: #e2e8f0;
}
.demo-pill-locked:hover {
    background: #e2e8f0;
}
.demo-pill-locked.is-active {
    border-color: #475569 !important;
    background: #e2e8f0 !important;
    box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px rgba(71, 85, 105, 0.35);
}

/* 12. Hiệu ứng nhấp nháy Input */
.input-flash {
    animation: authInputPulse 0.4s ease-out;
}

@keyframes authInputPulse {
    0% { background-color: #dbeafe; }
    100% { background-color: #f8fafc; }
}

/* ===== 13. Trang Đăng nhập: nền riêng + thẻ rộng hơn ===== */
body:has(.login-card) {
    background-image:
        linear-gradient(180deg, rgba(255, 255, 255, 0.10) 0%, rgba(239, 246, 255, 0.20) 100%),
        url('/images/login-bg.webp');
    background-position: center center;
    background-size: cover;
}

.login-card {
    max-width: 520px;
    padding: 2.75rem 2.5rem;
    background: rgba(255, 255, 255, 0.96);
    box-shadow:
        0 30px 60px -20px rgba(15, 23, 42, 0.22),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
}

/* Chip tài khoản mẫu: không xuống dòng */
.login-card .demo-pill {
    white-space: nowrap;
    padding: 0 4px;
    gap: 4px;
    font-size: 12.5px;
}

/* Mobile */
@media (max-width: 575.98px) {
    body:has(.login-card) {
        background-attachment: scroll;
        padding: 1.25rem 0.75rem;
    }
    .login-card {
        max-width: 100%;
        padding: 2rem 1.25rem;
    }
}

/* ===== 14. Các trang xác thực còn lại: nền chung + kích thước thẻ ===== */
body:has(.register-card),
body:has(.forgot-card),
body:has(.reset-card),
body:has(.change-card) {
    background-image:
        linear-gradient(180deg, rgba(255, 255, 255, 0.10) 0%, rgba(239, 246, 255, 0.20) 100%),
        url('/images/login-bg.webp');
    background-position: center center;
    background-size: cover;
}

.register-card,
.forgot-card,
.reset-card,
.change-card {
    background: rgba(255, 255, 255, 0.96);
    box-shadow:
        0 30px 60px -20px rgba(15, 23, 42, 0.22),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
}

.register-card {
    max-width: 620px;
    padding: 2.25rem 2.5rem;
}

.forgot-card,
.reset-card,
.change-card {
    max-width: 480px;
    padding: 2.5rem 2.25rem;
}

@media (max-width: 575.98px) {
    body:has(.register-card),
    body:has(.forgot-card),
    body:has(.reset-card),
    body:has(.change-card) {
        background-attachment: scroll;
        padding: 1.25rem 0.75rem;
    }
    .register-card,
    .forgot-card,
    .reset-card,
    .change-card {
        max-width: 100%;
        padding: 2rem 1.25rem;
    }
}