@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Roboto:wght@300;400;500&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 30%, #cbd5e1 70%, #94a3b8 100%);
    min-height: 100vh;
    position: relative;
    /* [수정] 스크롤바가 생기지 않도록 overflow: hidden을 다시 추가합니다. */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 스케이트보드 배경 요소들 (기존과 동일) */
body::before {
    content: ''; position: absolute; top: 15%; left: 10%; width: 300px; height: 80px;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.3), rgba(247, 147, 30, 0.3));
    border-radius: 40px; transform: rotate(-15deg);
    animation: skateboard1 8s ease-in-out infinite; z-index: 1;
}
body::after {
    content: ''; position: absolute; bottom: 20%; right: 5%; width: 250px; height: 70px;
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.25), rgba(147, 51, 234, 0.25));
    border-radius: 35px; transform: rotate(20deg);
    animation: skateboard2 10s ease-in-out infinite reverse; z-index: 1;
}

/* (기타 배경 애니메이션 요소는 그대로 유지) */
@keyframes skateboard1 {
    0%, 100% { transform: rotate(-15deg) translateX(0) translateY(0); opacity: 0.6; }
    50% { transform: rotate(-10deg) translateX(50px) translateY(-20px); opacity: 0.8; }
}
@keyframes skateboard2 {
    0%, 100% { transform: rotate(20deg) translateX(0) translateY(0); opacity: 0.6; }
    50% { transform: rotate(25deg) translateX(-30px) translateY(15px); opacity: 0.8; }
}
@keyframes skateboard {
    0%, 100% { transform: translateY(-50%) rotate(0deg); }
    50% { transform: translateY(-60%) rotate(10deg); }
}

.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    padding: 1rem; /* 상하 여백 축소 */
    position: relative;
    z-index: 10;
}

.login-logo {
    font-family: 'Orbitron', monospace;
    font-size: 2.2rem; /* [수정] 폰트 크기 축소 */
    font-weight: 900;
    color: #ff6b35;
    text-decoration: none;
    margin-bottom: 1.5rem; /* [수정] 간격 축소 */
    position: relative;
    transition: all 0.3s ease;
}
.login-logo:hover { transform: scale(1.05); }
.login-logo::after {
    content: '🛹'; position: absolute; right: -50px; top: 50%;
    transform: translateY(-50%); font-size: 1.5rem;
    animation: skateboard 2s ease-in-out infinite;
}

.login-form {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    padding: 2.5rem; /* [수정] 내부 여백 축소 */
    width: 100%;
    max-width: 420px; /* 최대 너비 살짝 축소 */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.login-form::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, #ff6b35, transparent);
    animation: borderAnimation 2s linear infinite;
}
.login-form::after {
    content: '🛹'; position: absolute; top: -15px; right: 20px; font-size: 2rem;
    opacity: 0.5; transform: rotate(15deg);
    animation: formSkate 4s ease-in-out infinite;
}
@keyframes borderAnimation {
    0% { left: -100%; }
    100% { left: 100%; }
}
@keyframes formSkate {
    0%, 100% { transform: rotate(15deg) translateY(0); opacity: 0.5; }
    50% { transform: rotate(10deg) translateY(-5px); opacity: 0.7; }
}

.login-form h2 {
    color: #1e293b;
    text-align: center;
    margin-bottom: 1.5rem; /* [수정] 간격 축소 */
    font-family: 'Orbitron', monospace;
    font-size: 1.6rem; /* [수정] 폰트 크기 축소 */
    font-weight: 700;
}

.input-group {
    position: relative;
    margin-bottom: 1.2rem; /* [수정] 간격 축소 */
}

.input-group i {
    position: absolute; left: 1rem; top: 50%;
    transform: translateY(-50%); color: #ff6b35;
    font-size: 1.1rem; z-index: 2;
}

.input-group input {
    width: 100%;
    padding: 0.9rem 1rem 0.9rem 3rem; /* [수정] 내부 여백 축소 */
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: #1e293b;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}
.input-group input:focus {
    outline: none; border-color: #ff6b35;
    background: rgba(255, 255, 255, 0.6);
}
.input-group input::placeholder { color: #6b7280; font-weight: 400; }

.login-btn {
    width: 100%;
    padding: 0.9rem; /* [수정] 내부 여백 축소 */
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    border: none; border-radius: 12px; color: #ffffff;
    font-size: 1rem; /* [수정] 폰트 크기 축소 */
    font-weight: 600; cursor: pointer;
    margin-bottom: 1.2rem; /* [수정] 간격 축소 */
    transition: all 0.3s ease;
    text-transform: uppercase; letter-spacing: 1px;
    position: relative; overflow: hidden;
}
.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 107, 53, 0.3);
}
.login-btn::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}
.login-btn:hover::before { left: 100%; }

.form-links {
    text-align: center;
    margin-bottom: 1.5rem; /* [수정] 간격 축소 */
}
.form-links a {
    color: #374151; text-decoration: none; font-size: 0.9rem;
    font-weight: 500; transition: color 0.3s ease;
}
.form-links a:hover { color: #ff6b35; }
.form-links span { color: #9ca3af; margin: 0 0.5rem; }

.divider {
    text-align: center;
    margin: 1.5rem 0; /* [수정] 간격 축소 */
    position: relative;
}
.divider::before {
    content: ''; position: absolute; top: 50%; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(107, 114, 128, 0.3), transparent);
}
.divider span {
    background: rgba(255, 255, 255, 0.8); color: #4b5563; padding: 0.4rem 0.8rem; /* [수정] 내부 여백 축소 */
    border-radius: 20px; font-size: 0.8rem; /* [수정] 폰트 크기 축소 */
    font-weight: 500; position: relative; z-index: 1;
    backdrop-filter: blur(10px); border: 1px solid rgba(255, 255, 255, 0.4);
}

.social-login {
    display: flex;
    flex-direction: column;
    gap: 0.8rem; /* [수정] 간격 축소 */
}
.social-btn {
    padding: 0.9rem; /* [수정] 내부 여백 축소 */
    border: none; border-radius: 12px; font-size: 1rem; font-weight: 500;
    cursor: pointer; transition: all 0.3s ease; display: flex;
    align-items: center; justify-content: center; gap: 0.5rem;
    position: relative; overflow: hidden;
}
.social-btn::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}
.social-btn:hover::before { left: 100%; }

.social-btn.kakao { background: #fee500; color: #3c1e1e; font-weight: 600; }
.social-btn.kakao:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(254, 229, 0, 0.4); }
.social-btn.naver { background: #03c75a; color: #ffffff; font-weight: 600; }
.social-btn.naver:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(3, 199, 90, 0.4); }

/* (반응형, 스크롤바, 오토필 스타일은 기존과 동일) */
@media (max-width: 768px) {
    .login-logo { font-size: 2rem; }
    .login-form { padding: 2rem; }
    .login-form h2 { font-size: 1.5rem; }
}
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: rgba(156, 163, 175, 0.2); }
::-webkit-scrollbar-thumb { background: linear-gradient(45deg, #ff6b35, #f7931e); border-radius: 4px; }
input:-webkit-autofill, input:-webkit-autofill:hover, input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0px 1000px rgba(255, 255, 255, 0.4) inset;
    -webkit-text-fill-color: #1e293b !important;
    transition: background-color 5000s ease-in-out 0s;
}