/* Typography: Pretendard (modern, clean Korean font) + SacheonUju (elegant logo) */

/* SacheonUju Font */
@font-face {
    font-family: 'SacheonUju-Regular';
    src: url('https://fastly.jsdelivr.net/gh/projectnoonnu/2506-1@1.0/SacheonUju-Regular.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* Skyblessing Inje (하늘내린 인제체) */
@font-face {
    font-family: 'SkyblessingInjeFontTTF';
    src: url('https://fastly.jsdelivr.net/gh/projectnoonnu/2507-1@1.0/SkyblessingInjeFontTTF.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: block;
}

/* Typography variables and global rendering tweaks */
:root {
    --font-body: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
    --font-display: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
    --font-logo: 'SkyblessingInjeFontTTF', serif;
    --navbar-height: 64px;
}

body {
    word-break: keep-all;
    word-wrap: break-word;
    overflow-wrap: break-word;
    font-family: var(--font-body);
    line-height: 1.6;
    color: #333;
    font-size-adjust: from-font;
    font-synthesis: none;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.login-section {
    min-height: calc(100vh - var(--navbar-height));
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #fce7f3 0%, #fdf2f8 25%, #f3e8ff 50%, #e9d5ff 75%, #fce7f3 100%);
    padding: calc(var(--navbar-height) + 1rem) 0 2rem;
    /* 배경 색 변환으로 인한 버튼/브랜드 색상 변화를 방지 */
    animation: none;
    color: #1e1b4b;
}

@keyframes hueShift {
    0% {
        filter: hue-rotate(0deg);
    }
    25% {
        filter: hue-rotate(20deg);
    }
    50% {
        filter: hue-rotate(60deg);
    }
    75% {
        filter: hue-rotate(20deg);
    }
    100% {
        filter: hue-rotate(0deg);
    }
}

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 0 1rem;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    animation: slideUp 0.6s ease-out;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, #ec4899, #8b5cf6);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header .logo {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: #ec4899;
    margin-bottom: 1rem;
    font-family: var(--font-logo);
    letter-spacing: -0.03em;
}

.login-header .logo i { margin-right: 0.5rem; }

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.login-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e1b4b;
    margin-bottom: 0.5rem;
    font-family: var(--font-display);
    letter-spacing: -0.02em;
}

.login-header p {
    color: #666;
    font-size: 1rem;
    font-family: var(--font-body);
}

.login-form {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #1e1b4b;
    font-size: 0.95rem;
    font-family: var(--font-display);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.input-wrapper i {
    position: absolute;
    left: 1rem;
    color: #666;
    z-index: 1;
    transition: color 0.3s ease;
}

.input-wrapper input {
    width: 100%;
    padding: 1rem 3.25rem 1rem 3rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    font-family: var(--font-body);
}

.input-wrapper input:focus {
    outline: none;
    border-color: #ec4899;
    background: white;
    box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.1);
    transform: translateY(-1px);
}

.input-wrapper input:focus + i {
    color: #ec4899;
}

.toggle-password {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    z-index: 1;
    transition: all 0.3s ease;
    padding: 0.25rem;
    border-radius: 6px;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    line-height: 1;
}

.toggle-password:focus { outline: none; box-shadow: none; }

.toggle-password i { pointer-events: none; }

.toggle-password:hover {
    color: inherit;
    background: transparent;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: #666;
    font-family: var(--font-body);
}

.checkbox-wrapper input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #e5e7eb;
    border-radius: 4px;
    margin-right: 0.5rem;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark {
    background: #ec4899;
    border-color: #ec4899;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.7rem;
    font-weight: bold;
}

.forgot-password {
    color: #ec4899;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.forgot-password:hover {
    color: #8b5cf6;
    text-decoration: underline;
}

.login-btn {
    width: 100%;
    background: linear-gradient(135deg, #ec4899, #8b5cf6);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    font-family: var(--font-display);
    box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
}

/* remove diagonal sweep animation */
.login-btn::before { content: none; }

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(236, 72, 153, 0.4);
    background: linear-gradient(135deg, #f472b6, #a855f7);
}

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

.social-login {
    text-align: center;
    margin-bottom: 2rem;
}

.social-login p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    position: relative;
    font-family: var(--font-body);
}

.social-login p::before,
.social-login p::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30%;
    height: 1px;
    background: #e5e7eb;
}

.social-login p::before {
    left: 0;
}

.social-login p::after {
    right: 0;
}

.social-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    color: #333;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body);
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.social-btn.kakao {
    background: #FEE500;
    border-color: #FEE500;
    color: #000000;
}

.social-btn.kakao:hover,
.social-btn.kakao:focus,
.social-btn.kakao:active {
    background: #FEE500;
    border-color: #FEE500;
    color: #000000;
}

.social-btn.google {
    background: #ffffff;
    border: 1px solid #dadce0;
    color: #3c4043;
}

.social-btn.google i { color: inherit; }

.social-btn.google:hover,
.social-btn.google:focus {
    background: #ffffff;
    border-color: #dadce0;
    box-shadow: 0 1px 2px rgba(0,0,0,0.08), 0 1px 3px rgba(60,64,67,.15);
    transform: none;
}

.social-btn.google:active {
    background: #f8f9fa;
    box-shadow: inset 0 1px 0 rgba(0,0,0,0.05);
}

/* Google button alternative (left accent strip) */
.social-btn.google.alt {
    position: relative;
    background: #ffffff;
    border: 1px solid #dadce0;
    color: #3c4043;
}
.social-btn.google.alt::before {
    content: '';
    position: absolute;
    left: -1px;
    top: -1px;
    bottom: -1px;
    width: 6px;
    border-top-left-radius: 12px;
    border-bottom-left-radius: 12px;
    background: linear-gradient(180deg, #4285F4 0%, #DB4437 33%, #F4B400 66%, #0F9D58 100%);
}
.social-btn.google.alt:hover,
.social-btn.google.alt:focus {
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.signup-link {
    text-align: center;
    font-size: 0.9rem;
    color: #666;
    font-family: var(--font-body);
}

.signup-link a {
    color: #ec4899;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.signup-link a:hover {
    color: #8b5cf6;
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 480px) {
    .login-card {
        padding: 2rem 1.5rem;
    }
    
    .login-header h2 {
        font-size: 1.5rem;
    }
    
    .form-options {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

/* Animation */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Error states */
.input-wrapper.error input {
    border-color: #ef4444;
    background: #fef2f2;
}

.input-wrapper.error i {
    color: #ef4444;
}

.error-message {
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 0.5rem;
    font-family: var(--font-body);
}

/* Success states */
.input-wrapper.success input {
    border-color: #10b981;
    background: #f0fdf4;
}

.input-wrapper.success i {
    color: #10b981;
}

/* Dark Mode Styles */
body.dark-mode .login-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 25%, #1e1e1e 50%, #2d2d2d 75%, #1a1a1a 100%);
    color: #ffffff;
}

body.dark-mode .login-card {
    background: rgba(40, 40, 40, 0.95);
    color: #ffffff;
}

body.dark-mode .login-header h2 {
    color: #ffffff;
}

body.dark-mode .login-header p {
    color: #cccccc;
}

body.dark-mode .form-group label {
    color: #ffffff;
}

body.dark-mode .input-wrapper input {
    background: rgba(60, 60, 60, 0.8);
    border-color: #4a4a4a;
    color: #ffffff;
}

body.dark-mode .input-wrapper input:focus {
    background: rgba(80, 80, 80, 0.8);
    border-color: #ec4899;
}

body.dark-mode .input-wrapper i {
    color: #cccccc;
}

body.dark-mode .toggle-password {
    color: #cccccc;
}

body.dark-mode .toggle-password:hover {
    color: #ec4899;
    background: rgba(236, 72, 153, 0.2);
}

body.dark-mode .checkbox-wrapper {
    color: #cccccc;
}

body.dark-mode .checkmark {
    border-color: #4a4a4a;
}

body.dark-mode .social-btn {
    background: rgba(60, 60, 60, 0.8);
    border-color: #4a4a4a;
    color: #ffffff;
}

body.dark-mode .social-btn.google {
    background: rgba(60, 60, 60, 0.8);
    border-color: #4a4a4a;
    color: #ffffff;
}

body.dark-mode .social-btn.google:hover {
    background: rgba(80, 80, 80, 0.8);
    border-color: #ec4899;
}

body.dark-mode .signup-link {
    color: #cccccc;
}

body.dark-mode .social-login p {
    color: #cccccc;
}

body.dark-mode .social-login p::before,
body.dark-mode .social-login p::after {
    background: #4a4a4a;
}