/* ===== LOGIN PAGE STYLES ===== */
/* Uses CSS variables from styles.css */

/* ===== PAGE LAYOUT ===== */
.login-page {
    background: var(--gradient-hero);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    position: relative;
    overflow: hidden;
}

/* ===== STARFIELD BACKGROUND ===== */
.login-stars {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
}

.login-star {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: starTwinkle 3s ease-in-out infinite;
}

.login-star:nth-child(1) { top: 8%; left: 12%; animation-delay: 0s; }
.login-star:nth-child(2) { top: 15%; left: 78%; animation-delay: 0.5s; width: 2px; height: 2px; }
.login-star:nth-child(3) { top: 32%; left: 5%; animation-delay: 1s; }
.login-star:nth-child(4) { top: 45%; left: 92%; animation-delay: 1.5s; width: 4px; height: 4px; }
.login-star:nth-child(5) { top: 60%; left: 25%; animation-delay: 2s; width: 2px; height: 2px; }
.login-star:nth-child(6) { top: 72%; left: 85%; animation-delay: 0.3s; }
.login-star:nth-child(7) { top: 88%; left: 45%; animation-delay: 1.2s; width: 2px; height: 2px; }
.login-star:nth-child(8) { top: 25%; left: 55%; animation-delay: 2.5s; }
.login-star:nth-child(9) { top: 52%; left: 40%; animation-delay: 0.8s; width: 4px; height: 4px; }
.login-star:nth-child(10) { top: 78%; left: 65%; animation-delay: 1.8s; }
.login-star:nth-child(11) { top: 5%; left: 35%; animation-delay: 0.2s; width: 2px; height: 2px; }
.login-star:nth-child(12) { top: 95%; left: 15%; animation-delay: 2.2s; }

@keyframes starTwinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.5); }
}

/* Floating mystic shapes */
.login-floating {
    position: fixed;
    pointer-events: none;
    z-index: 0;
}

.login-floating-1 {
    top: 10%;
    right: 8%;
    width: 120px;
    height: 120px;
    border: 2px solid rgba(167, 139, 250, 0.15);
    border-radius: 50%;
    animation: floatSlow 8s ease-in-out infinite;
}

.login-floating-2 {
    bottom: 15%;
    left: 5%;
    width: 80px;
    height: 80px;
    border: 2px solid rgba(96, 165, 250, 0.15);
    border-radius: 50%;
    animation: floatSlow 10s ease-in-out infinite 2s;
}

.login-floating-3 {
    top: 50%;
    left: 10%;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatSlow 6s ease-in-out infinite 1s;
}

@keyframes floatSlow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-25px) rotate(5deg); }
}

/* ===== LOGIN CONTAINER ===== */
.login-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* ===== HEADER / LOGO ===== */
.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease-out;
}

.login-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 2rem;
    font-weight: 900;
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-base);
}

.login-logo:hover {
    transform: scale(1.05);
}

.login-logo-icon {
    font-size: 2.25rem;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
    50% { transform: scale(1.2) rotate(180deg); opacity: 0.8; }
}

.login-tagline {
    margin-top: var(--spacing-xs);
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

/* ===== LOGIN CARD ===== */
.login-card {
    width: 100%;
    max-width: 440px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(107, 70, 193, 0.15);
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out 0.15s both;
}

/* ===== TABS ===== */
.login-tabs {
    display: flex;
    border-bottom: 2px solid var(--gray-100);
}

.login-tab {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-sm);
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-base);
}

.login-tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: transparent;
    border-radius: 3px 3px 0 0;
    transition: all var(--transition-base);
}

.login-tab:hover {
    color: var(--primary-purple);
    background: var(--gray-50);
}

.login-tab.active {
    color: var(--primary-purple);
}

.login-tab.active::after {
    background: var(--gradient-primary);
}

/* ===== FORM AREA ===== */
.login-form-area {
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
}

/* ===== FORM PANELS ===== */
.login-panel {
    display: none;
}

.login-panel.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== FORM ELEMENTS ===== */
.login-field {
    margin-bottom: var(--spacing-md);
}

.login-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.login-input {
    width: 100%;
    padding: 0.875rem var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--gray-800);
    background: var(--white);
    transition: all var(--transition-base);
    box-sizing: border-box;
}

.login-input::placeholder {
    color: var(--gray-300);
}

.login-input:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(107, 70, 193, 0.1);
}

.login-input:invalid:not(:placeholder-shown) {
    border-color: #EF4444;
}

/* ===== PASSWORD FIELD WITH TOGGLE ===== */
.password-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--gray-600);
    font-size: 1.125rem;
    line-height: 1;
    transition: color var(--transition-base);
}

.password-toggle:hover {
    color: var(--primary-purple);
}

/* ===== ERROR MESSAGE ===== */
.login-error {
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: #FEF2F2;
    border: 1px solid #FECACA;
    border-radius: var(--radius-sm);
    color: #DC2626;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    animation: fadeIn 0.2s ease-out;
}

.login-error.visible {
    display: flex;
}

.login-error-icon {
    flex-shrink: 0;
    font-size: 1rem;
}

/* ===== SUCCESS MESSAGE ===== */
.login-success {
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: #F0FDF4;
    border: 1px solid #BBF7D0;
    border-radius: var(--radius-sm);
    color: #16A34A;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    animation: fadeIn 0.2s ease-out;
}

.login-success.visible {
    display: flex;
}

/* ===== FORM OPTIONS ROW ===== */
.login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-purple);
    cursor: pointer;
}

.forgot-password {
    font-size: 0.875rem;
    color: var(--primary-purple);
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition-base);
    background: none;
    border: none;
    padding: 0;
    font-family: var(--font-sans);
}

.forgot-password:hover {
    color: var(--deep-purple);
    text-decoration: underline;
}

/* ===== SUBMIT BUTTON ===== */
.login-submit-btn {
    width: 100%;
    padding: 0.9375rem var(--spacing-md);
    background: var(--gradient-button);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.login-submit-btn:hover:not(:disabled) {
    background: var(--gradient-button-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-2px);
}

.login-submit-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.login-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Loading state */
.login-submit-btn.loading {
    color: transparent;
    pointer-events: none;
}

.login-submit-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22px;
    height: 22px;
    margin: -11px 0 0 -11px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: btnSpin 0.7s linear infinite;
}

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

/* ===== DIVIDER ===== */
.login-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-200);
}

.login-divider-text {
    font-size: 0.8125rem;
    color: var(--gray-600);
    font-weight: 500;
    white-space: nowrap;
}

/* ===== SOCIAL LOGIN BUTTONS ===== */
.social-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.social-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.8125rem var(--spacing-md);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    position: relative;
    overflow: hidden;
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.social-btn-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-btn-icon svg {
    width: 20px;
    height: 20px;
}

/* Kakao button */
.social-btn-kakao {
    background: #FEE500;
    color: #000000;
    box-shadow: 0 2px 6px rgba(254, 229, 0, 0.3);
}

.social-btn-kakao:hover {
    background: #F5DC00;
    box-shadow: 0 4px 12px rgba(254, 229, 0, 0.4);
}

/* Kakao loading state */
.social-btn-kakao.loading {
    color: transparent;
}

.social-btn-kakao.loading .social-btn-icon {
    visibility: hidden;
}

.social-btn-kakao.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22px;
    height: 22px;
    margin: -11px 0 0 -11px;
    border: 3px solid rgba(0, 0, 0, 0.2);
    border-top-color: #000000;
    border-radius: 50%;
    animation: btnSpin 0.7s linear infinite;
}

/* Google button */
.social-btn-google {
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.social-btn-google:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    box-shadow: var(--shadow-md);
}

/* Google loading state */
.social-btn-google.loading {
    color: transparent;
}

.social-btn-google.loading .social-btn-icon {
    visibility: hidden;
}

.social-btn-google.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22px;
    height: 22px;
    margin: -11px 0 0 -11px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--gray-700);
    border-radius: 50%;
    animation: btnSpin 0.7s linear infinite;
}

/* ===== CARD FOOTER ===== */
.login-card-footer {
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-lg);
    text-align: center;
}

.login-terms {
    font-size: 0.75rem;
    color: var(--gray-600);
    line-height: 1.6;
}

.login-terms a {
    color: var(--primary-purple);
    font-weight: 500;
}

.login-terms a:hover {
    text-decoration: underline;
}

/* ===== BACK TO HOME LINK ===== */
.login-back {
    margin-top: var(--spacing-lg);
    text-align: center;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.login-back a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.login-back a:hover {
    color: var(--white);
    transform: translateX(-4px);
}

.login-back-arrow {
    font-size: 1.125rem;
    transition: transform var(--transition-base);
}

.login-back a:hover .login-back-arrow {
    transform: translateX(-4px);
}

/* ===== FORGOT PASSWORD MODAL ===== */
.forgot-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.forgot-modal-overlay.visible {
    display: flex;
}

.forgot-modal {
    width: 100%;
    max-width: 420px;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.3s ease-out;
    position: relative;
}

.forgot-modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--gray-600);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    line-height: 1;
}

.forgot-modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.forgot-modal h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.forgot-modal p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.forgot-modal .login-field {
    margin-bottom: var(--spacing-md);
}

.forgot-submit-btn {
    width: 100%;
    padding: 0.8125rem var(--spacing-md);
    background: var(--gradient-button);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.forgot-submit-btn:hover:not(:disabled) {
    background: var(--gradient-button-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-2px);
}

.forgot-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.forgot-submit-btn.loading {
    color: transparent;
    pointer-events: none;
    position: relative;
}

.forgot-submit-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22px;
    height: 22px;
    margin: -11px 0 0 -11px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: btnSpin 0.7s linear infinite;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .login-container {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .login-header {
        margin-bottom: var(--spacing-lg);
    }

    .login-logo {
        font-size: 1.75rem;
    }

    .login-logo-icon {
        font-size: 2rem;
    }

    .login-form-area {
        padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    }

    .login-card-footer {
        padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: var(--spacing-sm);
        justify-content: flex-start;
        padding-top: var(--spacing-xl);
    }

    .login-card {
        border-radius: var(--radius-lg);
    }

    .login-form-area {
        padding: var(--spacing-md);
    }

    .login-card-footer {
        padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
    }

    .login-tab {
        font-size: 0.9375rem;
        padding: var(--spacing-sm) var(--spacing-xs);
    }

    .login-options {
        flex-direction: column;
        align-items: flex-start;
    }

    .social-btn {
        font-size: 0.875rem;
        padding: 0.75rem var(--spacing-md);
    }

    .forgot-modal {
        padding: var(--spacing-lg);
    }

    .login-floating-1,
    .login-floating-2,
    .login-floating-3 {
        display: none;
    }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    .login-star,
    .login-floating-1,
    .login-floating-2,
    .login-floating-3,
    .login-logo-icon,
    .login-submit-btn.loading::after,
    .social-btn.loading::after,
    .forgot-submit-btn.loading::after {
        animation-duration: 0s;
    }

    .login-card,
    .login-header,
    .login-back,
    .login-panel.active,
    .forgot-modal {
        animation: none;
    }
}