/* ========== ROOT & RESET ========== */
:root {
    --brand-bg: #0b0f19;
    --brand-bg-alt: #151c2c;
    --brand-bg-light: #222738;
    --brand-primary: #33e27c;
    --brand-accent: #31c5f8;
    --brand-error: #f76e6e;
    --brand-success: #33e27c;
    --brand-border: #2d3447;
    --brand-shadow: 0 8px 32px 0 rgba(49,197,248,0.07), 0 1.5px 6px rgba(30,41,59,0.08);
    --brand-radius: 14px;
    --brand-radius-lg: 22px;
    --brand-radius-sm: 8px;
    --brand-glass-bg: rgba(25,30,46,0.94);
    --brand-glass-border: 1.5px solid rgba(49,197,248,0.11);
    --brand-focus: 0 0 0 3px rgba(49,197,248,0.15);
    --brand-white: #fff;
    --brand-text: #eaf1fa;
    --brand-text-muted: #8ca3c7;
    --transition: all 0.22s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    min-height: 100vh;
    background: var(--brand-bg);
    color: var(--brand-text);
    font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
    font-size: 16px;
}

body {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    margin: 0;
    padding: 0;
    background-attachment: fixed;
    overflow-x: hidden;
}

/* ========== LOGIN CONTAINER ========== */
.login-container {
    width: 100%;
    max-width: 440px;
    margin: 36px auto 24px auto;
    padding: 2.1rem 1.15rem 2.3rem 1.15rem;
    background: var(--brand-glass-bg);
    border-radius: var(--brand-radius-lg);
    box-shadow: var(--brand-shadow);
    border: var(--brand-glass-border);
    position: relative;
    overflow: hidden;
    z-index: 2;
    animation: fadeInDash 0.7s;
}

@keyframes fadeInDash {
    from {
        opacity: 0;
        transform: translateY(36px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

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

    .form-header h2 {
        background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
        background-clip: text;
        -webkit-background-clip: text;
        color: transparent;
        -webkit-text-fill-color: transparent;
        font-size: 1.45rem;
        font-weight: 800;
        margin-bottom: 0.18rem;
        letter-spacing: -1px;
        text-shadow: 0 4px 18px #33e27c18;
    }

    .form-header p {
        color: var(--brand-text-muted);
        font-size: 1.03rem;
        font-weight: 500;
        margin-bottom: 0;
        letter-spacing: 0.01em;
    }

.form-group {
    margin-bottom: 1.12rem;
    width: 100%;
}

/* ========== FORM CONTROLS ========== */
.form-label {
    display: block;
    margin-bottom: 0.20rem;
    font-weight: 600;
    font-size: 1.01rem;
    color: var(--brand-accent);
}

.form-control,
input[type="text"].form-control,
input[type="email"].form-control,
input[type="password"].form-control {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    padding: 13px 17px;
    border: 1.5px solid var(--brand-border);
    border-radius: var(--brand-radius-sm);
    font-size: 1rem;
    font-weight: 500;
    color: var(--brand-text);
    background-color: var(--brand-bg-light);
    transition: var(--transition);
    box-shadow: var(--brand-shadow);
    outline: none;
    line-height: 1.2;
}

    .form-control:focus {
        border-color: var(--brand-accent);
        background-color: var(--brand-bg);
        box-shadow: var(--brand-focus);
    }

    .form-control::-webkit-input-placeholder {
        color: #8cb8d9;
        opacity: 1;
    }

    .form-control::-moz-placeholder {
        color: #8cb8d9;
        opacity: 1;
    }

    .form-control:-ms-input-placeholder {
        color: #8cb8d9;
        opacity: 1;
    }

    .form-control::placeholder {
        color: #8cb8d9;
        opacity: 1;
    }

.error-message {
    color: var(--brand-error);
    font-size: 0.95rem;
    font-weight: 500;
    margin-top: 0.25rem;
    background: #2e1a23;
    border-radius: 8px;
    border: 1px solid #f76e6e44;
    display: none;
    padding: 0.3rem 0.6rem;
    line-height: 1.4;
}

/* ========== BUTTONS (UNIVERSAL) ========== */
.btn,
.btn-google,
input[type="submit"].btn,
input[type="button"].btn,
input[type="submit"].btn-google,
input[type="button"].btn-google {
    min-width: 0;
    max-width: 100%;
    width: 100%;
    padding: 13px 0;
    border: none;
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 700;
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
    box-shadow: 0 2.5px 10px #31c5f80b;
    margin-bottom: 0.12rem;
    letter-spacing: 0.01em;
    font-family: "Poppins", "Segoe UI", Arial, sans-serif;
    background: linear-gradient(90deg, var(--brand-accent), var(--brand-primary));
    color: #fff;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    height: auto;
    min-height: 48px;
    line-height: 1.2;
    -webkit-appearance: none;
    appearance: none;
}

    .btn:hover, .btn:focus,
    input[type="submit"].btn:hover, input[type="submit"].btn:focus,
    input[type="button"].btn:hover, input[type="button"].btn:focus {
        background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
        transform: translateY(-1.5px) scale(1.01);
        box-shadow: 0 4px 20px #33e27c18;
        outline: none;
    }

    .btn:disabled, .btn.btn-disabled,
    input[type="submit"].btn:disabled,
    input[type="button"].btn:disabled {
        background: #28314b !important;
        color: #888 !important;
        cursor: not-allowed !important;
        opacity: 0.58 !important;
        box-shadow: none !important;
        border: none !important;
        pointer-events: none !important;
        filter: grayscale(25%);
    }

/* Google button */
.btn-google,
input[type="submit"].btn-google,
input[type="button"].btn-google {
    background: #fff;
    color: var(--brand-accent);
    border: 1.5px solid var(--brand-accent);
    font-weight: 700;
    position: relative;
    padding-left: 2.3rem;
    min-height: 48px;
}

    .btn-google:before,
    input[type="submit"].btn-google:before,
    input[type="button"].btn-google:before {
        content: "";
        position: absolute;
        left: 1.1rem;
        top: 50%;
        transform: translateY(-50%);
        width: 20px;
        height: 20px;
        background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCA0OCA0OCI+PHBhdGggZD0iTTQyLjM4IDIwSDEyLjM2djguMDRoMTcuMTljLTIuMDggNS4wOS02Ljg2IDguODQtMTIuMTkgOC44NC03LjA4IDAtMTIuODQtNS43Ni0xMi44NC0xMi44NFMxMC4yOCAxMS4yIDE3LjM2IDExLjJjMy4xNSAwIDUuOTUgMS4xIDguMTkgMi45bDUuOTktNS45OUMyOC4yNiA2LjA0IDIyLjQ0IDQuMiAxNy4zNiA0LjJDOC4wNSA0LjIgMCAxMi4yNSAwIDIyLjJzOC4wNSAxOC4wNSAxNy4zNiAxOC4wNWM4LjIxIDAgMTUuNzQtNi42MSAxNy4yNS0xNS4yOHoiIGZpbGw9IiNGRjUiLz48L3N2Zz4=');
        background-size: contain;
        background-repeat: no-repeat;
    }

    .btn-google:hover, .btn-google:focus,
    input[type="submit"].btn-google:hover, input[type="button"].btn-google:hover,
    input[type="submit"].btn-google:focus, input[type="button"].btn-google:focus {
        background: var(--brand-bg);
        color: var(--brand-primary);
        border-color: var(--brand-primary);
    }

    .btn-google:disabled,
    input[type="submit"].btn-google:disabled,
    input[type="button"].btn-google:disabled {
        background: #28314b !important;
        color: #888 !important;
        cursor: not-allowed !important;
        opacity: 0.58 !important;
        border: none !important;
        pointer-events: none !important;
        filter: grayscale(25%);
    }

.btn-group {
    margin-bottom: 0.3rem;
    display: flex;
    gap: 0.7rem;
    flex-wrap: wrap;
    justify-content: space-between;
    width: 100%;
}

/* ========== REMEMBER ME ========== */
.remember-me {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-bottom: 1.2rem;
    gap: 0.5rem;
}

.remember-me-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-left: 32px;
    font-size: 1.02rem;
    min-height: 32px;
    font-weight: 500;
    color: var(--brand-accent);
}

.remember-me-checkbox {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    left: 0;
    top: 50%;
    width: 22px;
    height: 22px;
    transform: translateY(-50%);
    margin: 0;
}

.remember-me-custom {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 22px;
    width: 22px;
    background: linear-gradient(135deg, #e0f1ff 0%, #b8e1fc 100%);
    border: 2px solid #b8e1fc;
    border-radius: 6px;
    transition: border-color 0.2s, background 0.2s;
    box-shadow: 0 1px 4px rgba(19, 226, 252, 0.09);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.tick-svg {
    display: none;
    width: 16px;
    height: 16px;
    pointer-events: none;
}

.remember-me-checkbox:checked + .remember-me-custom {
    background: linear-gradient(135deg, #31c5f8 0%, #33e27c 100%);
    border-color: #31c5f8;
}

    .remember-me-checkbox:checked + .remember-me-custom .tick-svg {
        display: block;
        animation: tickIn 0.22s cubic-bezier(.4,2.2,.2,1);
    }

@keyframes tickIn {
    0% {
        opacity: 0;
        transform: scale(0.5) rotate(-20deg);
    }

    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

.remember-me-text {
    margin-left: 0;
    color: var(--brand-accent);
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: color 0.18s;
}

.remember-me-label:hover .remember-me-custom {
    border-color: #31c5f8;
}

.remember-me-label:hover .remember-me-text {
    color: #33e27c;
}

.remember-me-checkbox:focus + .remember-me-custom {
    border-color: #31c5f8;
    box-shadow: 0 0 0 2.5px #31c5f825;
}

.forgot-password {
    font-size: 1.01rem;
    color: var(--brand-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color .18s;
    margin-left: auto;
}

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

/* ========== DIVIDER ========== */
.divider {
    display: flex;
    align-items: center;
    margin: 2.0rem 0 1.5rem 0;
    color: #acc8e5;
    font-size: 1.01rem;
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

    .divider::before,
    .divider::after {
        content: "";
        flex: 1;
        border-bottom: 1.5px solid #e6edf5;
        margin: 0 0.85rem;
        opacity: .7;
    }




/* ========== SIGNUP LINK ========== */
.signup-link {
    text-align: center;
    margin-top: 2.1rem;
    font-size: 1.01rem;
    color: var(--brand-text-muted);
    letter-spacing: 0.01em;
}

    .signup-link a {
        color: var(--brand-accent);
        text-decoration: none;
        font-weight: 700;
        transition: color .18s;
    }

        .signup-link a:hover {
            color: var(--brand-primary);
            text-decoration: underline;
        }

/* ========== CAPTCHA ========== */
.captcha-container {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    margin-bottom: 1.1rem;
    margin-top: 0.6rem;
    background: var(--brand-bg-light);
    border-radius: var(--brand-radius);
    box-shadow: 0 2px 7px #31c5f80c;
    padding: 1rem 0.7rem 0.7rem 0.7rem;
    position: relative;
    width: 100%;
}

#captchaCanvas {
    border-radius: 9px;
    background: linear-gradient(90deg, #232b3b, #151c2c 70%);
    margin-bottom: 0.4rem;
    width: 100%;
    max-width: 260px;
    height: 55px;
    margin: 0 auto 0.4rem auto;
    display: block;
    box-shadow: 0 2px 12px #31c5f813;
}

.captcha-input {
    margin-bottom: 0.2rem;
    font-size: 1.05rem;
    letter-spacing: 0.15em;
    font-family: "Poppins", "Segoe UI", Arial, sans-serif;
    text-align: center;
    background: var(--brand-bg-alt);
}

.btn-captcha-refresh {
    position: absolute;
    right: 1rem;
    top: 1rem;
    border: none;
    background: transparent;
    color: var(--brand-accent);
    font-size: 1.16rem;
    cursor: pointer;
    transition: color 0.18s;
    z-index: 2;
}

    .btn-captcha-refresh:hover {
        color: var(--brand-primary);
    }

.captcha-error {
    color: var(--brand-error);
    font-size: 0.92rem;
    font-weight: 500;
    margin-top: 0.1rem;
    display: none;
    text-align: center;
}

/* ========== LOADING OVERLAY ========== */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(25,30,46,0.91);
    z-index: 9000;
    justify-content: center;
    align-items: center;
    animation: fadeInDash 0.3s;
}

.loading-content {
    background: var(--brand-glass-bg);
    padding: 2.1rem 2.2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--brand-shadow);
    border: var(--brand-glass-border);
}

.loading-spinner {
    border: 6px solid #212738;
    border-radius: 50%;
    border-top: 6px solid var(--brand-accent);
    width: 34px;
    height: 34px;
    animation: spin 1s linear infinite;
    margin: 0 auto 0.8rem;
}

.loading-text {
    font-weight: 600;
    color: var(--brand-accent);
    font-size: 1.06rem;
    letter-spacing: 0.01em;
}

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

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 650px) {
    body {
        padding: 0;
        min-width: 0;
    }

    .login-container {
        margin: 0;
        border-radius: 0;
        box-shadow: none;
        min-width: 0;
        max-width: 100vw;
        width: 100vw;
        padding: 1.2rem 4vw 1.6rem 4vw;
    }

    .form-header h2 {
        font-size: 1.09rem;
    }

    .btn-group {
        flex-direction: column;
        gap: 0.48rem;
    }

    .btn, .btn-google,
    input[type="submit"].btn,
    input[type="button"].btn,
    input[type="submit"].btn-google,
    input[type="button"].btn-google {
        width: 100%;
        min-width: 0;
        max-width: 100%;
        font-size: 0.95rem;
        min-height: 42px;
    }

    .form-control {
        font-size: 0.97rem;
    }

    .form-group, .form-control, .btn, .btn-google {
        box-sizing: border-box;
    }

    .captcha-container {
        padding: 0.7rem 0.3rem 0.3rem 0.3rem;
    }
}

@media (max-width: 430px) {
    .login-container {
        padding: 0.7rem 2vw 1.1rem 2vw;
    }

    .form-header h2 {
        font-size: 0.95rem;
    }

    .btn, .btn-google,
    input[type="submit"].btn,
    input[type="button"].btn,
    input[type="submit"].btn-google,
    input[type="button"].btn-google {
        font-size: 0.89rem;
        padding: 0.53rem 0.2rem;
        min-height: 40px;
    }
}

/* ========== DECORATIVE BLOBS (OPTIONAL) ========== */
body::before,
body::after {
    content: '';
    position: fixed;
    z-index: 0;
    border-radius: 50%;
    pointer-events: none;
}

body::before {
    width: 330px;
    height: 330px;
    top: -110px;
    left: -100px;
    background: radial-gradient(ellipse at center, #31c5f8 0%, #33e27c 60%, rgba(25,30,46,0.0) 100%);
    opacity: 0.22;
    filter: blur(4px);
}

body::after {
    width: 220px;
    height: 220px;
    bottom: -60px;
    right: -60px;
    background: radial-gradient(ellipse at center, #33e27c 0%, #222738 80%, rgba(49,197,248,0.0) 100%);
    opacity: 0.13;
    filter: blur(5px);
}