@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;600;700&display=swap');

:root {
    --primary: #4361EE;
    --primary-light: #4895EF;
    --accent: #4CC9F0;
    --bg-dark: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --error: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(67, 97, 238, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(76, 201, 240, 0.1) 0px, transparent 50%);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
}

/* --- NAVIGATION --- */
nav {
    width: 100%;
    height: 70px;
    display: flex;
    align-items: center;
    padding: 0 40px;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

nav h1 {
    font-size: 1.5rem;
    background: linear-gradient(to right, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

/* --- MAIN FORM LAYOUT --- */
main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.container {
    width: 85%;
    max-width: 1000px;
    height: 600px;
    display: flex;
    background: var(--card-bg);
    backdrop-filter: blur(25px);
    border: 1px solid var(--glass-border);
    border-radius: 32px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.sideImg {
    width: 50%;
    background: linear-gradient(45deg, rgba(67, 97, 238, 0.4), rgba(76, 201, 240, 0.5)), url('./assets/sideimg.png');
    background-size: cover;
    background-position: center;
}

.formSide {
    width: 50%;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
}

.formSide h1 { font-size: 2.2rem; margin-bottom: 8px; }
.formSide p { color: var(--text-secondary); margin-bottom: 5px; }

form {
    width: 100%;
    max-width: 320px;
    margin-top: 25px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

form h3 { color: var(--accent); margin-bottom: 10px; font-weight: 600; }

form input {
    height: 48px;
    padding: 0 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1.5px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    transition: all 0.3s ease;
}

form input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 15px rgba(67, 97, 238, 0.2);
}

.submitBtn {
    margin-top: 10px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    font-weight: 700;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.submitBtn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(67, 97, 238, 0.4);
}

/* --- JS FEEDBACK STATES --- */
#errorText {
    color: var(--error);
    font-size: 0.85rem;
    margin-top: 12px;
    background: rgba(239, 68, 68, 0.1);
    padding: 8px 15px;
    border-radius: 8px;
    border: 1px solid rgba(239, 68, 68, 0.2);
    display: none;
    font-weight: 900;
}

#shiftPage { margin-top: 20px; font-size: 0.9rem; }
#shiftPage a { color: var(--accent); text-decoration: none; font-weight: 600; margin-left: 5px; }

/* --- MODAL (Signup Success) --- */
.modalScreen {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    display: none; /* Managed by JS */
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal {
    width: 90%;
    max-width: 400px;
    background: #1e293b;
    border: 1px solid var(--glass-border);
    border-radius: 32px;
    padding: 30px;
    position: relative;
    transform: scale(0.9);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    /* opacity: 0; Managed by JS */
}

.modal .cut {
    position: absolute;
    top: 20px;
    right: 20px;
    cursor: pointer;
    opacity: 0.5;
    transition: 0.3s;
}

.modal .cut:hover { opacity: 1; transform: rotate(90deg); }

.modalContent img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.modalText p:first-child { font-weight: 700; font-size: 1.2rem; margin-bottom: 5px; }
.modalText p:last-child { color: var(--text-secondary); margin-bottom: 25px; }

.modalContent button {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
}

/* --- MOBILE OPTIMIZATION --- */
@media (max-width: 768px) {
    .container { flex-direction: column; height: auto; padding-bottom: 30px; width: 90%; }
    .sideImg { display: none; }
    .formSide { width: 100%; }
}